A/N: As indicated at the end of Chapter 1, this is simply a new subdivision of the intitial piece, which was too voluminous to be fit into one section.

I repeat that I don't condone the behaviors depicted in this piece of fanfiction, that they don't reflect my views, and that I don't encourage anyone to behave in this way. This is a fictional story inspired by a work of fiction which I obviously don't own. It also doesn't reflect my tastes or my wishes in the Naruto fandom.

With that said, good reading.

Disclaimer: Naruto is the intellectual property of Masashi Kishimoto. I don't earn any benefits, financial or therwise, from creating and publishing this fanfiction story.

Hanabi had been Naruto's ardent lover for the past two years, unbeknown to the majority of their entourage. Especially to her sister Hinata, the young man's wife. Though that didn't really matter; the Uzumaki knew that, at the moment, she was probably busy handling his old teammate Sasuke Uchiha pounding into her at the latter's home, while trying not to wake his young daughter Sarada. Sakura was out on a late night shift at the hospital, and it was a perfect opportunity for the other adulterous couple.

Naruto and Hinata's relationship had started out well. They had been a happy couple even before their marriage; the special connection they had developed over the years they had known each other had finally led them to start dating after the Moon incident with Toneri Otsutsuki. Naruto had finally responded to Hinata's long-term feelings, having also gradually grown attracted to her ever since Pain's attack and the end of the Fourth Shinobi World War, including her cousin Neji's death, which had brought them closer. They had gone out for about a year before marrying, and the two following years had been joyful ones. In the hard-won peace the shinobi lands were enjoying since the war, their couple had flourished at first, despite the obstacles that came their way. The birth of their son Boruto the year after their wedding had seemingly consolidated this happiness into eternity. These had been times of joy, with no threats of war or other catastrophes coming their way.

And that had been the catalyst for the eventual disruption of their relationship. Once the fear of death had progressively recessed (due to their shinobi lives, it would never be completely eradicated) and no longer interfered with their emotions, the spark in their couple began to die down. It was as if a distorting glass had been troubling their perception for years and had finally been lifted. Suddenly, the attraction each felt toward the other began to diminish.

This was mainly due to the constant danger the both of them had been in for years. Both of their near-death experiences during Pain's assault and the war had largely inflated their emotions toward each other to the point of confusing it with true romantic love after Toneri's abduction of Hinata. The latter, despite having a crush on Naruto for more than ten years, had been subject to this artificial increase of feelings caused by her fear for his safety just the same as the boy, who had developed an interest in her after the Chunin Exams. This had culminated after the mission on the Moon, and had lasted three years, during which the both hadn't doubted their love for each other. Their engagement and the first years of marriage, along with the birth of their first child, had happened so quickly they had been caught up in the excitement of it all, and hadn't had time to properly settle their emotions.

However, the fourth year after their wedding, things had begun to unravel, despite the temporary relief provided by Hinata's second pregnancy and the birth of Himawari, Boruto's little sister. Both spouses had started to lose interest one another, drifting further apart after each argument, the number of which increasing. Tensions in the couple over Naruto's absences due to his missions (though they were more seldom due to the peaceful times and Kakashi's understanding) and Hinata's retirement (she refused to abandon their progeny in favor of her shinobi duties) had grown. The stress from taking care of two very young children hadn't helped, and moments of true family bliss had become rarer and rarer. Eventually, their feelings had faded to the point of being attracted to other people.

At this time, Naruto had forged a connection with Hanabi through a great number shared missions. This had led to increased frequentation between the two.

The girl had been fascinated with her now-brother-in-law for a long time. In her early childhood, she had been told to stay away from the older "problem child", like all other children. She had obeyed, still intrigued by the boy's brash and distinctive behavior, as well as by the affection her big sister had for him. Then, during the Chunin Exams right before the beginning of Orochimaru's attack on Konoha, she had witnessed him defeat her prodigious cousin Neji, much to her clan's astonishment.

That event had caused her to gain a deep curiosity about the genin. Having Hinata detail his qualities each time she asked about the latter's not-so-secret crush, and later hearing all the praises sung about the "Hero of Konoha" after Pain's assault (which she hadn't witnessed), Hanabi had been deeply intrigued by the way he had managed to motivate her sister to get stronger and to change the village's opinion about him. His international fame after the war had made her anxious to learn more. As a result, she had developed a strong interest in Naruto, though in her mind, it had been quite platonic. After all, her elder sister was in love with the young man. Additionally, she herself had been crushing on the year-older Konohamaru Sarutobi, with whom she had gone out for a while a few years after the mission on the Moon.

Hanabi had been overjoyed for her sister when the couple had gotten married, of course. She had broken up with Konohamaru around the time Boruto and the rest of the Rookie Nine's children had been born. Over the visits the Uzumaki family made to the Hyūga Clan and the ones she made to see her sister, she had developed a close friendship with Naruto. The curiosity she'd always had for him began to turn into something more material. She was entranced by the man's rugged handsomeness, his boyish charm, his sheer determination, and his subsequent charisma. Of course, the fact that he was married to her sister had had her refusing these feelings and closing her emotions off. But she couldn't simply stop seeing the Uzumaki family. And as she continued to visit, her attraction for the man eroded at her resistance, and the growing rift she witnessed between the couple did nothing to hinder that.

Naruto, on his part, had found Hanabi's lighthearted and younger presence quite refreshing compared to the growing monotony of his marriage. Eventually, her fiery temper, so different from Hinata, her mischief not unlike his own and her lively attitude had captivated him. Not to mention that nearing twenty, the girl had transformed into a seductive beauty that spoke to his masculine senses. He had also tried to fight against the pull the young woman exerted on him, out of respect for his family. However, the distance between him and his wife, not to mention the stress from his family life, had increased to the point of wearing his restraint quite thin.

The two shinobi had begun taking more and more missions together. They had found their teamwork was very efficient, and that their camaraderie actually helped fuel their cooperation skills on the field. Over the increased contact, their attraction grew. More than once, the two had had to sleep in the same bed because of a lack of accommodations.

The tension had reached boiling levels until one fateful day when they were returning to the village after a dangerous encounter with rogue ninja. Hanabi's life had been on the line, and their nerves were still high.

During the trip back, simple gestures were now watched with wariness. A mere brush between the two made them jump like they'd received a shock. Glances between them were short and intense. When eyes crossed, it was just as electric. Naruto repeatedly pulled at his jacket's collar, while Hanabi mindlessly brushed her hair behind her ear. The stress that came from battle hadn't vanished; it had morphed into something else.

A few dozen kilometers away from Konoha, in the forest, the pair stopped by a pond. They were both sweaty from the encounter with the enemy ninja and from how tense they had been; a bath was desperately needed. But the strange intensity between the two shinobi refused to decrease.

In order to defuse the awkward silence, Naruto volunteered to go first. Hanabi silently turned away and set their supplies down. The jinchuriki swallowed and turned his eyes away when he saw her untie her long, opulent dark hair and shake it like a glinting chocolate curtain. He rapidly undressed behind a bush and entered the pond.

While the man - her brother-in-law, she told herself - waded and washed in the cool water behind her back, the young kunoichi felt the sensation within her grow from tingles to embers burning throughout her body. She managed to ignore it until, out of the corner of her ivory eyes, brushing the perpetual strand of silky dark brown hair barring her face, she spotted a pile of clothes by a bush, with orange boxers on top.

A strange and irresistible impulse to see rose into her, and she suddenly activated her Byakugan, without any hand signs and with as little chakra possible so as not to draw Naruto's attention.

All at once, she was assaulted with the X-ray vision of broad, muscular shoulders and a slim but toned backside. Sculpted arm muscles tightened and relaxed as they splashed water and rubbed over his torso. Under the surface, she saw buttocks clenching as powerful legs stepped and shifted weight.

Hanabi's mouth dried. Her crotch tingled. Her breathing picked up. A whirlpool of burning sensations swirled in her chest. Abruptly, she deactivated her Visual Prowess, and shrugged her chūnin vest off, leaving her in a skin-tight short-sleeved black shirt. The fabric hugged her slim and toned torso and her contrastingly bountiful chest in a way that left very little to the imagination.

Her back still to Naruto, she promptly grasped the bottom of the shirt, lifted it and pulled it over her head, revealing a white bra underneath. The color matched with her fair skin, and the article fit snugly around her impressive assets, while nothing hid the lean muscles of her arms, shoulders and stomach anymore.

Crouching down, she undid the clasps of her sandals and unbuttoned her dark blue close-fitting shorts as she rose back up with lightning speed. Kicking her shoes off, the shorts fell to her ankles, which let her immaculate panties show. Her long, flawless legs glinted in the sunlight like marble. Then, she stilled, sensing a gaze on her.

Slowly, she turned around, clad only in her white undergarments, all slim figure and lithe muscles and sinful curves and straight oakwood hair falling over pearl-like skin. Pupilless ivory-colored irides shone with bright intensity between that curtain as she finished pivoting. She came face-to-face with the full-colored version of her companion.

Droplets trickled down the defined chest planes, shoulders, arms and abdominals. Naruto's skin was tan pink, his short spiky hair a vibrant wheat blond, and his eyes a smoldering blue, slit by a vertical pupil. His chest expanded and contracted as he breathed deeply, pectoral muscles clenching.

The pair stayed this way for a few instants that seemed to last an eternity, simply staring the other down. Their wide, glinting eyes roamed each other's bodies, devouring each curve, each muscle as violent, primal sensations tore at the last shred of conventional restraint they had preserved.

She's Hinata's sister.

He's my sister's husband.

But these meager reasoning attempts were incinerated the moment their gazes met again. Ivory met azure, and a powerful tremor ran through them both at the same exact moment.

Water splashing, Naruto lunged forward, stepping out of the water in all his naked glory, droplets flying around him. Simultaneously, Hanabi pounced, tearing off her bra and panties as she rushed to meet him.

They crashed together on the bank of the pond. Bodies rubbed against one another, hands caressed and explored, and lips smashed together in a fiery explosion of contained desire as tongues wrestled furiously. Breasts squashed against pectorals, manhood rubbed against nether lips, and the rest just flowed. Their bodies and animal instincts had taken over, and their rational minds were taking a break in the back of their head.

At some point, Hanabi was riding him while he was lying on the grass of the bank, his hands on her hips and her hands on his chest as she bounced up and down his rod, lush brown hair waving with her movements and sizeable mounds jiggling at the same rhythm. Next thing they knew, she was on her hands and knees, shaking from Naruto's assaults, breasts still swinging as he slammed into her from behind, hips moving back and forth, thigh muscles bulging. Then, they were doing it missionary style, on the ground, with him going back and forth above her while she wrapped her legs around his waist, his buttocks clenching and unclenching as he moved, chests squished against one another. Moans, grunts, and all sorts of cries rang out in the clearing around the pond. They both reached their climax at least five times, her warm juices gushing around his erect manhood as it emptied his hot essence into her.

After over an hour, he finally pulled out of her, and the pair collapsed to the ground, panting from the effort they had just made. Turning to lie on his side, the young man wrapped his arms around his partner and she snuggled in his embrace, their legs entangled. Both remained silent for a moment. The girl then kissed her companion deeply, and they let their lips mash together, smacking and suckling.

Breaking away from the kiss for an instant, still in each other's arms, Naruto spoke breathlessly: "This… is pretty bad… isn't it? I mean, it was amazing!" he immediately corrected himself, eyes wide. "But… I mean…"

"I know," Hanabi interrupted, looking down at his chest. "I feel the same way. But… I mean… I can't hold it in anymore," she confessed, raising her eyes to meet his.

He shivered at what he saw in those orbs. There was lust, but also something more profound, more earnest, more compelling, that drove him close to an edge he had been aware of for months.

"Me too, but… This isn't… Well…" he stuttered, warmth rising in his whiskered cheeks. "There's Hinata…"

"I know," she repeated, cutting him off again.

Pain flashed in her eyes, but she quashed it quickly. She started tracing patterns on his side, which triggered goosebumps and shivers in his spine. Bringing a hand up to his cheek, she stared at his face, her moon-like eyes boring deep into his soul.

"I'm not asking you to leave her or your family," she said. "I'm not making any demands. My sister doesn't have to know anything."

They both knew perfectly well that divorce between Hinata and Naruto wasn't an option. Firstly, it would break the family apart and leave their two children torn between their parents from an early age. Additionally, given the traditionalism and conventionality of the Hyuga Clan, there was no way for Hinata to return to them after a separation. They would judge this a shame and a failure on her part, and given her history, she risked severely undermining her father's authority within the clan, and by extension, Hanabi's future position as clan head, despite her improvements and accomplishments as a kunoichi over the years. On top of that came the damage a failed marriage would inflict on Naruto's reputation and on his candidacy to become Hokage. In spite of the way he had brushed negative opinions about him aside during his younger years, the young shinobi was now an international and public figure, and anything threatening his credibility also threatened his future career. Divorcing from Hinata Hyuga, the Byakugan Princess, whilst they had had two kids, would undoubtedly cause a scandal.

For better or for worse, the spouses had really committed into a lifelong union, which they had agreed to without any second thoughts at the time. But now…

"If you want to… keep this between us and act as if it never happened… I can do that," Hanabi affirmed, her tone resolute, though Naruto could detect a very slight wavering.

Then, she went on: "But…" (she bit her lip) "we could also keep this going."

His breath caught at her proposal. It wasn't as if the idea hadn't already popped into his mind earlier, but… could he really do that? His marriage was faring quite poorly, but still… Hinata was the woman he had spent his life with for the past years, the mother of his two children, the one he had been sure he would love until the end. Infidelity wasn't a part of who he was, of what he had built himself to be. He had always valued honesty and trust above all, and that was what had gotten him where he was today. Could he really forgo all that?

And yet… when he looked at Hanabi, in all her graceful and lithe beauty, in all her cheerful wit and fiery temper, in all her precise strength and solid determination, so different from his wife's qualities… it drew him in. The bond they had established, this easy camaraderie and mischievous connivence they shared, and the powerful attraction he felt towards her all made her that much more enticing. She represented adventure, change, and escape from the confines of his deteriorating relationship with Hinata. But most of all, she represented a challenge. And, among his defining traits, Naruto Uzumaki had always been terrible at resisting challenges.

Hanabi's eyes widened when her partner crashed his lips onto hers, but her lids soon lowered and she let her instincts take over. As the pair rolled in the grass, still quite naked, their arousal rushing back, Naruto felt a smile on the young woman's lips pressed against his. He responded with one of his own.

Suddenly, she stopped their motion, pushing him on his back while she lay on him, breasts squashed against his pectorals, her belly against his hip. Pulling away from his lips, she grinned mischievously and winked at him.

He frowned, confused at where she was going, but his eyes then widened when she started to lower her body down his, trailing her fingers down his skin. She kept going until her face was level with his groin, her chest resting on his lower thighs, spread out before him. He groaned when she gripped his member, and outright moaned when she engulfed the rod in her delicious mouth and started bobbing her head up and down.

The pair went at it again and again, for a period of around two hours, until they were completely worn out. Then they finally decided to get dressed, pick up their supplies, and head back to the village. Needless to say, the kunoichi had some trouble walking after that.

The return to the village had been relatively uneventful; they had been careful to tidy up and act normally. When Naruto had gone home, he had felt a surge of guilt when greeted at the door by his infant son Boruto and Hinata with baby Himawari in her arms, but he quashed it down. He had made a choice, and he would stick to it.

The liaison had been going on ever since. Whenever the Uzumaki and the Hyūga heiress were alone on a mission, clothes went flying as soon as they were in a private place. When both were in the village, they generally went off to Hanabi's secondary apartment outside the Hyūga compound, of which very little people knew about. But, unbeknown to them for a while, they weren't the only ones bending the rules of marriage.

Naruto had grown aware of this about three months ago, at a reception organized by Kakashi at the Hokage mansion. While the guests gathered in the main room, the Hyuga heiress had taken advantage of Hinata leaving for the bathroom. She had appeared by the Uzumaki's side, brushing her fingers against his shoulder. He had grinned when he had seen her in her beautiful golden gown, her hair in an ornamented dress. The Hero of Konoha himself was clad in a rather dashing dress shirt, blazer and slacks, bright blond hair gleaming under the lights and blue eyes glinting like sapphires.

No words were needed as both moved to leave the room through different routes. Having succeedingly sneaked away, the pair were looking for a room to properly reunite after a month of separation due to missions. However, in his haste, the young man hadn't noticed that Sasuke Uchiha, who had been invited and had shown up, surprisingly, was no longer by his wife Sakura's side. He had other issues on his mind at the moment.

In one of the deserted corridors, pants, shirt, dress and underwear were already on the floor. Naruto and Hanabi, both nude, were making out in a tangled mess of tongue and lips when the young man grabbed his lover by the rear, squeezing, much to her pleasure.

"I see you've missed me," she giggled in between kisses, grinding into him.

"You're one to talk," he replied, smashing his lips on hers again, which elicited a moan from the girl.

"That's quite… mmmhhh… quite scandalous, what you're doing here, isn't it, future Lord Hokage?" she had asked mid-kiss. "Abandoning your wife in the middle of an official reception to screw her sister? Who happens to be the next head of the Hyuga Clan?"

"Let's just not get caught, then," he whispered, sending shivers down Hanabi's spine. "And the only head tonight is the one we're both gonna get if you're a good girl," he added deviously, making the audacious kunoichi blush.

Hoisting her up with ease, Naruto positioned himself at her entrance as she locked her legs behind his lower back and crossed her arms behind his neck, breasts rubbing against pectorals. Moaning as he slid into her and reveling in her whimpers, he moved forward, carrying her toward a half-closed door which he knew led to a guest room. Too absorbed in their activity, neither of them caught on to the noises emerging from behind it. As Naruto pushed the wood panel open with Hanabi's body, stumbling into the bedroom, his half-lidded eyes opened wide and he froze in his kiss. It took a few seconds for Hanabi to realize something was wrong and creak her head back, her lover's rod still buried into her depths. But her ivory eyes widened just the same as him at the scene before her.

The bedroom, as they could now perceive, was laden with the heavy smell of sex. On the ruffled sheets of the creaking bed, they witnessed Sasuke Uchiha, the last member of his clan, standing on his knees, driving in and out of the former Hyuga heiress from behind while she moaned shamelessly into the pillows, both gloriously naked, pale skin glistening in the light.

His broad shoulders and muscular arms locked tight, Sasuke was positioned between Hinata's creamy lower legs while she lied on the mattress facedown, holding her curved hips as he rammed his cock deep into her pussy. The Hyūga's quaking, shapely buttocks were raised to the level of the young man's moving crotch, the latter's powerful back muscles rolling under his fair skin as he went back and forth. This repeated thrusting in turn made the former heiress's voluptuous breasts swing forward and backward, slapping against the sheets.

The Uchiha had heard them come in, and his dark eyes landed on them. A succession of emotions flashed in his obsidian gaze: surprise, recognition, then suddenly the glint of an idea, and finally devious glee. He smirked, and turned back to the young woman, clearly aware of the pair's presence.

"You're such a slut, Hyuga," Sasuke grunted out, leaning down to grasp his lover's large mounds and licking at her creamy shoulder while still pumping in and out of her. "Getting pounded by your husband's friend just a few rooms away from him. He could be in the goddamn room and you still wouldn't stop."

"Yes, Sasuke!" Hinata had moaned at the strong hands gripping her curvaceous bosom, raising her head from the pillow to speak, the large rod still driving into her, unaware of her husband and her sister standing in the doorway. "I'm a naughty, cheating wife!"

"Who can satisfy you? Who do this pussy and womb belong to?" the Uchiha had demanded while fondling the enormous orbs of flesh as his pelvis continued to rock the woman in a quaking mess, sending a blazing glance at his rival.

"You, Sasuke! I'm your woman! You're my sex god! Come on, make your rival's wife the mother of your children! Your own wife can't give you more than one heir! I'll give you ten!" the Hyūga uncharacteristically howled in ecstasy.

Rearranging her hands on the mattress to find better support, she turned her head back to kiss her partner on the lips as her elbows shook from the intense state of bliss she was in. She was panting deeply, her curvaceous body quaking, glinting indigo hair cascading over her back and down her opposite shoulder, her porcelain-pale, angelic face painted a deep red over the cheeks and nose bridge, pupilless, purple-tinted pale orbs half-closed in bliss. However, her gaze still caught sight of her husband and her sister in their clearly not innocent in the slightest position : the blond holding the young woman up by the buttocks, fingers digging into the cheeks, with the latter's legs wrapped around the Uzumaki's waist and hands gripping his broad shoulders, both stark naked.

Her eyes widened for a second, but the intense state of pleasure she was in from Sasuke's continued thrusts deep into her head apparently drastically altered her behavior, because she then smiled at the pair, throwing them a wink over the band of red on her face.

"Naruto, Hanabi, hi!" she exclaimed breathlessly, still shaking from her lover's assaults, groaning at his renewed ministrations on her breasts and belly. "What brings you… ohhhh…! what brings you here?..." she asked with some difficulty, panting.

At the other couple's speechlessness, Sasuke chuckled, a bit out of breath himself, still pounding into Hinata.

"Don't mind us, Naruto," he said, smirking. "Go on with what you were… doing. As you can see… we've got our own business," he growled out as he began thrusting harder, earning a long drawn-out moan from his lover.

The Uzumaki and his own lover had stayed motionless for a while, in shock at witnessing such a scene. Though the young man had had suspicions his wife had been as liberal with her ring as he had, it was a different thing to witness live evidence she was getting screwed by his best friend. However, watching the other pair and hearing Sasuke's comment, the two grew strangely aroused.

Turning her head back toward her companion, Hanabi started swinging her hips forward and backward, pumping up and down his member. Naruto also directed his gaze back to the girl, and began thrusting once again. Their lips met again, and Naruto, in a surge of aggressivity, advanced and pinned his sister-in-law to the wall, pounding deep into her insides like there was no tomorrow.

The two couples kept on screwing, one on the bed and one standing. Both of the Hyuga sisters were rapidly approaching their climax as the two strongest shinobi of their time drove them to the seventh sky. Finally, amidst the moans, growls and whimpers, a cry of pure ecstasy rang from the siblings' throats almost simultaneously. Their bodies loosened, and Hinata collapsed on the bed while Hanabi slumped in the blond jinchuriki's arms. Their two lovers reached their release together a few seconds later, also at the same time, grunting as they poured their fluid inside the women, then pulling out.

Once they had all regained their breath and their minds, an awkward silence ensued. The four of them were still quite naked, and avoided looking at each other. Sasuke and Hinata were sitting on the bed, and the other two were still up besides the wall. Naruto scratched his cheek, his arm around Hanabi; the heiress twirled a strand of hair around her finger while snuggling into his embrace. Hinata looked down at the mattress with a deep blush, her hands latched on Sasuke's defined upper arm, the latter apparently deep in thought.

It was becoming very uncomfortable very quickly. Naruto and Hinata felt like their skins crawled with bugs each time their eyes landed on the other. For one, seeing his nude wife glued to the side of his equally bare best friend, after witnessing what he had and having done what he'd done with her sister earlier was a mixture of shock, anger, shame, and lowliness. For the other, having her sister curled into her husband's arms a few meters away, both also naked, with them having stumbled upon Sasuke and her while they themselves were having a go, then behaving as she had and saying what she had and what they'd all done… made her feel essentially the same way.

Then, as the spouses opened their mouths to speak, the Uchiha cut them off.

"Look, here's how things are," he sharply declared. "We are now all aware that we haven't been the most faithful individuals. If we keep what we saw here to ourselves, it's going to eat at us. If we talk about what happened, everyone will lose out."

Naruto looked at his… rival (he couldn't call him a friend right now). He knew the man was right, but he didn't see where he was going.

"There's a solution," Sasuke then affirmed, onyx eye glinting. "If I place all of us under a memory-altering genjutsu, we won't remember this incident. That way, we get to walk away free from that burden."

Naruto opened his mouth to disagree, but the Sharingan user beat him again.

"There's no better option right now, Naruto," he insisted. "Do you really want to go on with that image in your mind? I know Hinata doesn't," he added more softly, gazing down at his lover.

The former heiress looked torn, shoulders shaking. Eventually, however, she nodded at Sasuke's remark.

Still doubtful, Naruto inquired: "How're you gonna erase your own memory? And how do you even make sure no one'll notice the genjutsu and dispel it?"

"Unlike you, I actually prepare for eventualities," the Uchiha shot back, the hint of a smirk on his face - which made the jinchuriki's blood boil. "I've developed a new visual genjutsu which allows to not only modify others' memories, but mine as well. Unlike most illusions, this alters the flow of chakra in the body very subtly, which makes it difficult for shinobi to detect. Additionally, I'm the only one able to dispel this jutsu, and that's not going to happen, since I'll be under it myself."

The Uzumaki was mildly impressed, both by the precision with which his old teammate had designed this technique and by the detail and length of his explanation. I think that's the longest I've heard him speak in a year.

Naruto thought and thought. He visually asked Hanabi, who also nodded after apparently intense reflection. Then, abruptly, he answered, glaring at Sasuke: "Go ahead. Before I change my mind."

The Uchiha nodded curtly. Quickly, he activated his right Sharingan, the red iris and black tomoe then shifting in the pinwheel shape of his Eternal Mangekyō Sharingan. First, he looked deep into Hinata's lavender-tinted pupilless eyes, which were gazing up at him in earnest. They widened, then slowly closed as the illusion took place.

Meanwhile, Naruto called onto his old friend in his body for a favor. The fox agreed quite easily.

When Sasuke turned his red and black gaze on the other pair, they both felt as if the spectral hand of the Susanoo was poking and playing with their minds and memories. Recent events became blurry, until a booming voice snapped Naruto out of the haze. Quickly, he dispelled Hanabi's trance as well, and her ivory orbs snapped back into focus.

Oblivious to their change, the caster had turned away from them and toward the bedside table. Grabbing a mirror, he gazed at his reflection, and Naruto realized he had half-believed the dojutsu user wouldn't actually hypnotize himself.

Apparently, it worked, because after long minutes, Sasuke blinked groggily and set the mirror down. At the same time, Hinata woke from her trance and met his eyes. The two seemed oblivious to Naruto and Hanabi, probably as another effect of the genjutsu. Slowly, their faces inched toward each other, fingers coming to brush at each other's pale shoulders and upper arms.

Hanabi and Naruto finally snapped out of their own, natural daze, and hurriedly stepped out of the room. Once they were in the corridor, they gathered their clothes, trying to be as discreet as possible so as not to alert the others to their presence. Though if the deep suction noises, Sasuke's groans and Hinata's muffled humming had been any indication, the pair had been too busy to notice them.

When Sasuke had returned from his long journey across the continent, Hinata and him had grown closer over the multiple occasions when they had met; Naruto and him were best friends, after all, and the two often saw each other, with the young woman often accompanying her fiancé (which then became her husband). Sasuke had quickly gotten engaged then married to the still-infatuated Sakura, his feelings more influenced by guilt over his past, and so had also rapidly grown disinterested in his spouse, despite the genuine affection he held for his newborn daughter Sarada. With the attraction between the two dojutsu users having grown, they had eventually ended up having an affair. As with Naruto and Hanabi, guilt and a sense of property had kept them apart at the beginning, but growing lust and distance from their respective families had also overcome their reservations.

The frustration and tension between the pair had culminated over a year and a half ago. Hinata's husband had been kinder and more attentionate in the past few months, to her surprise, but now, he sometimes disappeared randomly for undetermined periods of time. Meanwhile, the former Hyuga had been agonizing in guilt over the strange feelings and sensations she felt toward Sasuke, which had only increased as time went on.

Every time they ran into each other, or he came back from one of his long missions and stopped by their house (the reverse was rarely the case), her composure, which only Naruto had been able to break before their fallout, shattered around the Uchiha, destroying all the growth she had put herself through over the years. She blushed whenever he offhandedly said something nice to her, even accidently, and she was drawn in by his dark handsomeness, dark eyes, and broody charisma. She had never found interest in those features while she was a girl, but now suddenly they assaulted her perception. And the pain he still hid under many protective layers called out to her caring personality, wanting him to let her in and allow her to help soothe it. She had managed to get him to open up just the tiniest about his past, and even if it was meager, she treasured these conversations and his companionship more than she should.

Of course, she tried her hardest to beat those instincts out of existence. She was a married woman, and to Naruto Uzumaki, the future Hokage, the man she had chased after since her childhood. Furthermore, Sasuke was also wed to Sakura, a friend of hers, with whom he'd already had a daughter, little Sarada. How could she, undeserving of her situation and yet blessed as she was, betray her husband and her friend by having such desires toward a man who was off-limits and who had no interest whatsoever in her?

And yet she couldn't force this attraction out of existence, for all the remorse and self-loathing it had brought her. Sasuke was still drawing her in like a magnet, appearing in her dreams and fantasies, where he had replaced her husband, and haunting her. The deterioration of her relationship with Naruto and the disappearance of her feelings for him had left a void in her heart, which the Uchiha had filled so fast she had wondered whether something had always been there.

On a fateful night, as cliché as it may have sounded, Hinata was once again alone in the living room of her house. Naruto was on another diplomatic trip, and wouldn't be back for a few days. Boruto and baby Himawari were being kept by Kiba and his girlfriend Tamaki, as some sort of practice for eventual kids. She had been worried about Akamaru and Kiba's clumsiness, but Tamaki had assured her they would be very careful, and besides, Kiba had the experience of handling young puppies, which, he said, were far more difficult than human babies. She had agreed out of her own weariness. Apart from that, Hanabi was part of Naruto's negotiating team, and all of her other friends were either busy or asleep at this point.

The former clan heiress was tired, lonely, and most of all frustrated, emotionally and sexually. Her husband and her hadn't been intimate for almost a year now, and she felt as if she was losing contact with her sister, for some unknown reason. Her guilt made her avoid Sakura, and other friends such as Ino or Tenten or Temari weren't enough to make her feel happy again, despite their efforts; they had lives of their own. As a result, the Hyuga-turned-Uzumaki felt like she was growing away from everyone in her life, and she felt needful, a sentiment she had never liked, despite what some rather unkind clanmates had said about her years earlier.

Sighing as she plopped down on the couch, Hinata's head rose up and her face turned surprised when she heard a knock at the door. She wasn't expecting anyone tonight. Rising from her seat prudently, she activated her Byakugan. Then, she gasped.

On the other side of the door stood Sasuke Uchiha himself.

Her shock was dispelled when he spoke, gazing through the wooden panel as if he could see her as she could him.

"Hinata, you know it's me. Open up, please."

Quickly, the woman in question deactivated her dojutsu and crossed over to the door, doing her best to calm her galloping heart and to quash the blush rising in her cheeks. This was not the moment… or so she thought.

When she pulled the panel open, the Uchiha stepped in, looking composed as always, his cloak trailing behind him, all tall figure and broad shoulders and jet-black hair and calm beauty that left her as unbalanced as she had feared.

As the cloth fell back around his torso, she caught a glimpse of something white by his left side, where he had lost his arm. Suddenly, her breath caught in her throat. This couldn't be…?

All her suspicions were thrown out the window when he turned around, facing her and towering over her smaller frame, beautiful black eyes glinting, his hair unexpectedly combed back, and he reached toward the door and closed it with what was undoubtedly a left arm wrapped in white bandages.

"You… Sasuke, you… you have a new arm!" Hinata stuttered out, pupilless eyes wide.

"What gave you that idea?" the Uchiha smirked, pulling his limb back and swirling his bandaged hand, as if to show off.

"That's wonderful!" she exclaimed, smiling wide. "I'm sure Sakura and our friends are very happy for you too. Naruto will be ecstatic once he returns and sees you've finally accepted the same arm he has."

"Let's not talk about Naruto right now," he responded, a bit terse.

Surprised at his change of tone, the former heiress raised an eyebrow. But her other one immediately arrived at the same level when she looked into his eyes.

His gaze, usually impassible, was now brimming with intensity, black irides roaming over her face almost hungrily before dipping below. Hinata's beautiful face went bright red, not only because her belly was heating up under those eyes, but also because she now remembered she had chosen to wear something different from her usual baggy clothes - both under Ino's suggestion and because it was quite warm in the evenings.

She was clad in comfortable blue pants and most importantly, a tight black tank top which let her fair-skinned lithe arms and round shoulders show. Her long, lush indigo hair (which she'd considered cutting short) fell like a shimmering drape down her back, the strands covering the back and sides of her neck but leaving her pearly white throat uncovered.

However, what really made her a blushing mess was the significant amount of pale-skinned, ample cleavage revealed by the shirt's low cut. The piece of fabric was much less baggy than what she was used to, and her voluminous breasts were in a tight fit, pushing against the cloth and stretching it so that it was practically molded to her bosom, leaving little to the imagination.

She wasn't used to being this exposed, and definitely not under Sasuke's fiery gaze. Red from her neck to the roots of her hair, she babbled out incoherent justifications, swiftly covering herself by crossing her arms over her chest.

An even greater shock came when the Sharingan user grabbed her upper arms, still looking at her with this blazing light in his dark orbs. Hinata would have believed only his dojutsu could hypnotize someone so completely, but evidently she was wrong. She found herself pulled into the pool of blackness, her core heating up like a boiling lake, tingles and sparks and embers running through her veins and up and down her spine. Her delicate cheeks reddened further, if that was possible, and she finally managed to avert her lavender-tinted pupilless irides, gaining momentary relief.

"Sa… Sasuke, what… what is this…?" the retired kunoichi managed to ask, struggling get the words out as she closed her arms around herself further, despite his hands holding on.

She was rendered speechless when, after feeling his non-bandaged hand let go of her right arm, his fingers, strong yet gentle, took hold of her chin and raised her face back toward his. Her eyes widened when she saw the Uchiha's handsome features come closer.

Then, his lips mashed with hers, and he was kissing her. He was passionate, though not aggressive, sucking at her lips, moving his mouth against hers and softly inclining her chin as to gain a better angle, his nose brushing against her cheek. Slowly, Hinata's lids lowered as she let herself get lost in the sensations this was stirring in her. These were magnified by ten, though, when she opened her mouth to allow his tongue to slip inside and tangle with hers.

It was a mess of electric currents shooting through her veins and muscles, fiery dragonflies swarming in her belly, and even tingles in her toes (corny as that may be). Her mind swam in an ocean of bliss, her brain numbed by the buzzing wave of dopamine spreading from her mouth. She breathed in his scent, lightning-metallic and campfire-smoky, as well as strangely wood-like, and tasted his mouth, tomato-flavored, which all meshed together to create something unexpectedly delicious.

She let her arms fall before her, his bandaged hand sliding down to grab hers; she squeezed back. The fingers on her chin released their hold and brushed sideways over her ear, through her silky hair and to the back of her head, and he then kissed her with renewed vigor.

They kept up the battle of tongues with no winner, unexpectedly but with no regrets on either side, until the Uchiha finally pulled away from his companion's mouth, ending the bliss felt by both.

For a moment, Hinata remained with her mouth ajar, a dazed expression on her angelic face, red bridging her nose and pooling over her cheeks, panting slightly - which made her that much cuter. Sasuke was also breathing more deeply, but his tint had only shifted to pink. He smirked at the other dojutsu user's face, upon which she snapped out of her trance, blinking rapidly pulling her head back.

The Uchiha expected her to throw herself back and question him and say that this couldn't happen while blushing like a tomato, but he was surprised.

The Byakugan user's signature eyes, usually so kind and pure, shifted: a new glow appeared in them. A simmering, dangerous glint, accompanied by an expression he had never expected to witness on this charming face: lust.

Sasuke Uchiha, former rogue shinobi and second most powerful ninja alive, gulped as he witnessed Hinata Hyuga, the woman he had desired for over a year now, level her visage with his, all-seeing pale eyes locked on him, looking more beautiful than ever in her unusually revealing top. He was both slightly fearful and more aroused than ever. The churning pool of liquid boiling in his belly surged and flooded his entire body when, grabbing the neck of his undercoat, she pulled him forward, her generous bosom pressing against his defined chest through the fabric. He was entirely consumed when she whispered in his ear:

"What was that about, dear Sasuke?"

Growling, Sasuke closed both his arms, the original and the new one, around her curvaceous frame, pressing their bodies flush together and angling his head for his mouth to come kissing at her neck. She whimpered lowly, breathing in deeply, and he grinned, whispering back:

"Well, you've driven me to the brink of insanity for months now. And now, I'm here to claim what I want, consequences be damned, because I know I'm wanted back."

"Ahh… what gave you… that idea?" Hinata got out, trembling in his hold and rubbing herself against him, which made him hiss.

"I catch those glances… those gestures… those attempts to get closer, Hyuga," he responded, trailing his lips down to the juncture of her neck and shoulder, while at the same time kneading her round buttocks, rewarded by louder moans (muffled by biting her lip). "And you're not exactly doing a splendid job at rejecting me right now."

He loved this defiant side of her, which he had only heard about from Naruto or her kids when they described her ire. However, she had apparently gathered enough rationality back to pull away slightly, though her fingers were still on his biceps.

"Sasuke…" the former clan heiress began, her voice filled with want and longing, eyes shining with the effort she was making. "I… this isn't right… We're both… Naruto… Sakura…"

"I know, Hinata," he interrupted, tensing in effort as well, trying to restrain himself. "But I can barely control myself around you, and I know you feel the same way. We both need this, so why not? It's not healthy for us to keep on like this."

"I… I know," she admitted, lowering her gaze to his chest, still breathing hard as he rubbed at her sides, fingers leaving a trail of sparks in the wake. "B-But… what about…"

"Shhh…" Sasuke shushed, raising his left hand to caress her cheek, obsidian eyes boring deep into her lavender-tinted pupilless ones. "It's just the two of us right now. Give in, Hinata."

The desire blazing through them both finally ate at the last of their resistance, and their lips crashed together again. Their modies melded, separated by fabric: breasts squishing against pectorals, wet nether lips rubbing against rock-hard manhood, hands caressing muscular shoulders and curved hips and broad back and round behind.

Then, they were tearing each other's garments off. Hinata unclasped Sasuke's cloak, letting it fall to the ground, and went to unbutton his jacket while his hands slipped under the hem of her top, brushing against her soft skin and pulling the fabric up. Lust sped up their motion to supernatural levels, humming through their nerves and muscles like electricity: she felt fluids pooling down her in nether regions, wetting her underpants, while he felt his member twitching and getting even harder, straining against the constraints of his pants. Both finished the motion, the Byakugan user raising the shirt over her head and throwing it to the side, and the Uchiha discarding his jacket and dress shirt astoundingly fast.

The pair were left almost shirtless. Wetting her lips, Hinata visually devouring the sight of Sasuke's muscular torso, heaving pectorals and sculpted abdominals glinting in the light of the lamps. His shoulders were broad and powerful, and his arms were corded with lean muscles, earned from years of shinobi activity. Meanwhile, the young man relished on the vision of his companion's buxom figure, all gorgeous curves along her hips and sides with her enormous bosom barely contained by a purple bra. Her belly was flat, slightly toned (proof that she still trained) and her fair, flawless skin shone like pure ivory. The lustrous indigo curtains falling down her sides and lithe arms glimmered with sparkling reflections. His mouth dried, and the bulge in his pants stretched further than ever.

They then received another lust shock which directed their attention to each other's pants. Fumbling with the button and zipper or the belt buckle, both finally managed to grab the hem of the article and, with multiple tugs, lower it down to the ankles. Both kicked theirs away, but this time, they didn't stop to contemplate each other's bare forms.

Pressing their now underwear-clad bodies flush against each other once again, Sasuke groaned at the magnified feeling of Hinata's sinful curves, soft skin, voluptuous mounds and moist crotch rubbing against his chiselled torso, strong legs and large rod through the undergarments. Electricity stronger than Chidori buzzed through his nerves, and fire hotter than Amaterasu burned in his every fiber, urging him to take more.

Snarling with animal desire, onyx eyes turning tomoe-patterned crimson to the right and entirely ringed purple with the same markings to the left, the Uchiha picked up the former Hyuga bridal style, which earned a squeal of surprise from her. Reveling from the continued press of her soft skin against his, he pounced toward the stairs, his companion lighter than a feather, and climbed up the steps faster than should have been humanly possible, leaving their clothes in a pile in the living room.

Moving as though the house was his own, the Sharingan user turned right into the second floor corridor, his dual dojutsu active and blazing, bypassing the children's rooms until he reached the door at the far end. In his arms, Hinata widened her eyes, opening her mouth, but didn't have the time to speak as he shouldered the ajar panel fully open.

This was the master bedroom of the house, where the Uzumaki couple slept and had conceived their children. With a growl, Sasuke lay Hinata down on the mattress, gentler than she would have expected, before standing back up and closing the door shut.

Turning back toward her, the Uchiha gazed down at the former Hyuga heiress, who shivered at the vision she was presented with. He looked like a sort of primordial god, carved pectorals and abdominal pack heaving up and down as he breathed, his heterochromatic eyes blazing: his Sharingan glowed bright red, the tomoe patterns inside the iris rotating like a pinwheel, and his Rinnegan, purple and marked by concentric rings from the sclera to the pupil, seemed both alien and strangely familiar, the same tomoe spread out around the center.

Through those orbs, Sasuke was contemplating the most beautiful sight in existence : Hinata, in all her divine beauty and opulent figure, generous cleavage squeezed in a strained piece of fabric, long legs spread out on the mattress below soaked panties, skin gleaming, lush dark blue hair spilling besides her gorgeous face, her cheeks and nose tinted red, gem-like purple-tinted pupilless eyes glowing with desire, lying down on her marital bed, hands on her belly in a coy but playful invitation. But this time, the blessed mortal who would answer it was not his rival, the man she had married, but he, Sasuke Uchiha.

Entranced, the Sharingan user tore his black boxers off, finally letting his imposing member and sack spring free. Mouth dry, the former heiress rose up, unclasped her bra, and discarded it, before wiggling out of her panties. Not a second passed by before he joined her, letting their nude bodies meld at last.

The rest happened in a blur. A tangle of moans, grunts, calls, screams and growls, not to mention creaks and the slap of flesh, as the pair merged and reached Nirvana over and over again.

At first, Sasuke was on his knees with Hinata's legs up against his torso and her feet over his shoulders, thrusting deep into her, sending tremors through her body.

Then, he was on his back and she was riding him with her own back facing him, rising up and down his shaft while her mounds bounced with the rhythm.

After that, she was on her belly, head in the sheets, as he drove into her from above, body angled diagonally to the mattress with his arms supporting him, muscles locked and bulging.

Finally, they found themselves face-to-face again, Sasuke up on his knees with Hinata wrapped tightly around him, legs locked behind his lower back and arms behind his neck, kissing deeply, ample breasts against sculpted chest, with his own hands gripping her defined buttocks, keeping her above the bed as he pounded into her upwardly, smothering their moans in their mouths. They both reached their climax simultaneously, her juices flooding his manhood as it sprayed his essence into her core to the very last drop.

The two lovers collapsed back on the mattress, utterly exhausted after the two-hour session, and Sasuke pulled out of Hinata with a grunt, rolling off her and on his back. She snuggled into each other's embrace, falling asleep, and after a kiss to her lips, he followed her.

After this night, the two dojutsu users had kept on seeing each other. Of course, they'd had no idea that Hinata's husband was doing the same thing, much less with her sister, until that reception at the Hokage's.

After the incident, Naruto had explained to Hanabi that he had had Kurama break him out of Sasuke's genjutsu as a last-minute resort, and that he had then dispelled her illusion. He argued that, despite their initial instinct of wanting to forget what they had witnessed, he prefered knowing, and he knew that this was her case as well. Despite the genjutsu having muddled their memory enough as to prevent them from actually remembering the scene in perfect detail, they still knew what had transpired. But Hinata and Sasuke's own memories were locked inside the young man's Sharingan, and breaking them out of it might prove more difficult. Additionally, Hanabi pointed out, they had nothing to gain from jolting those memories back into existence.

Back in the present, Naruto suspected that the new curve of Hinata's belly that had appeared at this time was indeed the Uchiha's doing, despite the quick intercourse his wife and he had had a few days after this discovery - the first in months, most likely to cover her tracks. He'd wondered if this love child would inherit the Sharingan or the Byakugan.

That was a question which wouldn't present itself in the case of the new life growing in Hanabi's belly since the previous month. There was little doubt their first child would inherit their mother's strong genetics and dojutsu.

When the clan head had marched into his office that evening and motioned for him to dismiss the hidden Anbu guards, he had thought she wanted to have a go right here and now, which he had then contemplated on how to refuse - never an easy thing to do. But to his relief, she had asked him to make excuses and meet her back at the penthouse, which he had gladly agreed to, though he had noticed she seemed more emotional than aroused. Her beautiful ivory eyes were humid, and her voice, usually so stable, was shaking. But he had put those thoughts off, guessing she would tell him later on at their secret place.

However, not even twenty minutes later, when he had opened the door of the apartment and seen her standing in the middle of the living room, a pregnancy test in her hand, his brain had stopped working. He had remained in the doorway, motionless, until she had pulled him inside and closed the door, checking if anyone had seen them.

Once his cognitive functions had kicked back in gear, she had confirmed what he already knew. What had followed had been a result of the overflow of emotions and sensations running through the both of them. He didn't know whether it was pride or animal-like territoriality which was predominating in his mind, but he had wanted her so badly it hurt. Clothes had been discarded faster than ever, the door to the bedroom kicked open, and they had crashed on the mattress, their mostly-naked bodies already melded to each other.

For the moment, the Uzumaki laid in bed with his lover, partner, or companion, spooning her from behind, his arms around her midsection. While the Hyuga slept away, breathing peacefully and dreaming (he hoped) just as well, his hand came to caress her naked belly. It was still flat and toned for now, but it would be getting rounder and rounder as months went by and life grew within the safety of her womb.

While this would actually be the young kunoichi's first pregnancy, the jinchuriki, despite his experience, felt just as nervous as for Boruto's birth. In fact, he was perhaps even more worried, given that this time, it would be his adulterous lover, who happened to be his wife's sister, that would be carrying his offspring. The double life that the two of them were leading, this hidden relationship, and their now confessed love…

Despite his fear, though, the feeling of knowing he, Naruto Uzumaki, was going to have a baby with Hanabi Hyūga, the woman he was in love with and who loved him back, whether they were married or not, was enough to bring him to the edge of overflowing happiness.

And with that thought in mind, Naruto drifted into sleep as well, a smile on his lips as he rearranged his hold on Hanabi.

A/N: There. As I said at the beginning, I don't condone adultery in any way. This was just a way to express my imagination (yes, I catch the ironic nods). I also don't ship NaruHana or SasuHina; these pairings are something I wanted to try my hand at, and I found this angle inspired me.

I remind people who may be shocked by this that they are not required to read nor to appreciate, and as such I will not respond to people accusing me directly of encouraging immorality or the like.

If you enjoyed the story and/or have some some constructive criticism to bring, I would ask that you please leave a review. It strongly helps motivation.

Good day to y'all!

ThePunner