Happy birthday to Zane5! I hope I've fulfilled your R27 dreams in this chapter.

I can't see Reborn violating an underage Tsuna, so this is slightly AU. Eighteen year old Tsuna now has more guts, brawn and brain in his system, because I can't deal with Reborn sexually harassing a wimpy, pathetic quivering mass of . . . you get the picture.

Anyway, enjoy Adult!Reborn violating 18 year old Tsuna of his body rights. Bodily rights. Body's rights. Either way, he's still violating Tsuna, because I say so.

x

Tsuna sat on the side of his bed, leaning out of the window and licking at a lime green and orange Popsicle. It was hot for April. Unnaturally hot, like the sun had been yanked out of the Sahara and placed right above his neighborhood, which wasn't really a good thing despite how cool it sounded. Tsuna ran a hand through his thick brown spikes, wondering if it was time for a haircut. Lately, his fringe had been growing long, past his eyes and was now tickling his nose. He blew them upward with a minty Popsicle breath and pushed his hair back once more.

Now on the brink of eighteen, Tsuna was older, taller, and more mature than what he used to be. He didn't squeal as much as he used to when pressured to do something he was against, and seemed to think things over twice before voicing his thoughts.

Dark eyes roved the teen's body as he stretched out his long, lanky legs, the short shorts he was wearing barely covering his butt as he shifted on his bed. Tsuna yawned, pushing both arms out before him, careful not to let his Popsicle drip icy puddles over his floor. His shirt – three sizes too small for his long torso – rode up to expose his toned stomach and navel.

"Mmm." Tsuna opened his mouth to reinsert the Popsicle, moaning as the ice cold hit the warm insides of his mouth. He pushed the stick in a little further before pulling it out and flicking his pink tongue out over the melting top of the Popsicle.

"Lazing around again, Tsuna?"

Amber eyes shifted their gaze from the window to look at the black haired assassin leaning against his doorframe attentively. "Not really, no."

Now that he'd reached the legal age, Tsuna seemed barely bothered by anything – not even Reborn, whom he used to be terrified of during his childish fourteen year old days. Reborn's threats seemed to lessen a whole lot more as well, and he'd stopped using the nickname; Useless Tsuna.

The teen went back to licking his Popsicle, thrusting the stick gently into his mouth as he watched the white clouds in the sky drift carelessly in a wide sea of blue. A thought struck him, and he turned to look at Reborn again. Even when it was sweltering hot outside, Reborn still wore his black jacket, white shirt, and black pants. His fedora sat on his head in a jaunty manner, giving him a mysterious aura.

"Aren't you hot, Reborn?"

"Mind over matter." Reborn replied in his usual quiet way, sliding the door shut behind him as he walked into the room.

Tsuna thought he heard the lock click.

"Strong willpower; what a turn on." Tsuna rolled his eyes, uncrossing his legs as he held out his Popsicle toward his tutor. "Want a lick?"

"I'll pass."

Tilting his head to the side, Reborn slid his black jacket off and loosened his tie. The bright orange inline of his jacket caught Tsuna's eye as Reborn tossed it over a chair. He grinned at his tutor, who looked back at him silently, rolling up his white shirt sleeves.

"Reborn, wanna hear what I think?"

"Depends." The black tie joined the jacket with a sharp fwip. "Is it worthwhile?"

Tsuna laughed; his tutor was as cynical as ever. "I think you're cute."

Reborn stopped rolling his sleeves up his arms. "How so?"

"You like the color orange!" Tsuna lay back on his bed with a light thump, tilting his Popsicle so it dripped sweetness onto his waiting tongue. "I think that's what makes you so cute."

"Is that all?" Tsuna could hear Reborn roll his eyes.

The teen sat up on his bed, looking affronted. "'Course not, silly. But y'know what they say; people who like bright colors can't be very dangerous."

Reborn was suddenly leaning over him, looking into his amber eyes with his own dark colored ones. "What are you trying to say, Tsuna?"

For a moment, Tsuna felt the fourteen year old in him rear up with panic; Reborn looked pissed. He calmed himself with a mental kick and smiled at his tutor.

"Basically, you try to look mysterious and act dangerous and all that." Tsuna licked the tip of his Popsicle slowly – it was getting smaller as it melted, and he didn't want it gone so soon. "But you're actually really adorable."

"So you think I'm pretending to be dangerous?" Reborn drawled out the last word in his sentence calmly, leaning closer to Tsuna, making the teen back down onto his mattress.

Tsuna pouted. "You're twisting my words."

"You said that I try to act dangerous. That's the same as . . ."

Reborn trailed off as Tsuna shut his eyes, sucking the full length of his Popsicle into his mouth, hollowing out his cheeks. Long eyelashes fluttered open to reveal mischievous amber eyes watching Reborn watching him. Just for fun, Tsuna stuck out his tongue again and flicked it up and down his Popsicle tip, keeping his eyes trained on his tutor, who had his eyes glued to Tsuna's mouth. Smirking, Tsuna enveloped the Popsicle stick into his mouth and moaned softly, thrusting the brightly colored ice lolly in and out before pulling it away with an audible pop. Purposely, he licked a drip of lime green from his fingers, making sure to angle his body so Reborn could catch him in the act.

"Sure you don't want to try my Popsicle?" Tsuna breathed.

"I'm sure." Reborn replied, drawing back up to resume his sleeve rolling on his right arm – his left was complete, with neat, precise folds. "One question for you, Tsuna."

Spreading his legs up in the air, Tsuna stuck the Popsicle into his mouth and waved both arms, trying to reach his toes. Lambo had managed to shave all the hair off both his legs while he was sleeping earlier, and now they felt kind of . . . silky. "Shoot."

"Trick or treat?"

Tsuna parted his legs, propping himself on his elbows so he could peek at Reborn. "April Fool's passed, Halloween isn't here yet. Forgot your calendar, Reborn?"

"Just answer me." Reborn narrowed his eyes at Tsuna's long legs, the creamy skin of the underside of his limbs tempting him as Tsuna waved his smooth legs ever so slowly.

"I already did." Tsuna decided to be cruel, sucking the last bits of his Popsicle into his mouth and savoring the fruity sweetness melting on his tongue. When it was all gone, he stuck his pink tongue out and flicked it the same way he had earlier, this time directed at Reborn. "But you can ask me again."

Reborn's hands were on his legs, long fingers sliding over Tsuna's ankles as he kissed the teen's feet lightly. "Trick or treat, Tsuna?"

"Depends." Tsuna shot back, a roguish smirk sculpting one side of his lips as he gave Reborn a dose of his own medicine. "Is it worthwhile?"

Kneeling down between his legs, Reborn took his time, kissing a trail down Tsuna's calf to the back of his knee before switching to the other leg. It felt like he was being worshipped. Tsuna giggled.

"Fine, don't sulk." Tsuna sat up, allowing Reborn to run his hands over his smooth thighs. "Treat. I don't want to be tricked by you."

"Why not?" Reborn kissed his way up Tsuna's thigh.

"Because you get mean." Tsuna said teasingly, tossing his Popsicle stick into the trash can near his desk. He had good aim. "I don't like it when you're mean."

Reborn chuckled, getting to his feet. "But I'm never nice."

Tsuna smiled, looking like the cat that got the cream. "Well, now you'll have to be, because I chose treat."

"Treat it is." Reborn replied as he got onto the bed with graceful ease, pushing Tsuna down with one hand on his chest. "How funny, Tsuna. I was sure you'd choose trick."

Despite feeling nervous, Tsuna covered up well. "You know me, Reborn. I've always been fickle."

"Oh, I do know you." Reborn practically growled, sliding his hand under Tsuna's tight shirt. "You're becoming a little tease, but I think you already knew that."

"Mmm, less talking, more action." Tsuna murmured, pushing Reborn's fedora off as he threaded his hands through the assassin's hair.

Reborn pressed his lips to Tsuna's, invading his warm mouth as he tasted the sweet Popsicle that had been devoured minutes ago. Their tongues rolled, flicking over each other as they kissed. Tsuna was sure he moaned; Reborn was a good kisser. The feel of Reborn's tongue guiding his own around in gentle, massaging circles left Tsuna breathless for more. He could feel Reborn's hands pushing his shirt up – his favorite tee, though a little frayed and faded, was much too small for him since his growth spurt – over his nipples, which hardened as fingers brushed over them. Tsuna gasped when Reborn pinched them, fondling his nipples into pert little buds between finger and thumb. Black irises met amber ones as Reborn smirked at Tsuna, going lower on the teen until he reached his navel.

"Who's the tease now?"

Tsuna smirked back, but the smirk was soon wiped off his face when Reborn traced abstract patterns around his navel, licking at his skin with an experimental air. The brown haired teen felt his half-hard cock give a twitch. Reborn spread his legs apart, sliding both hands on the insides of his thighs, feeling the smooth, creamy skin under his palms. The bulge in Tsuna's tight shorts grew bigger as Reborn stuck two fingers under one leg of his shorts, feeling his bare skin in one languorous stroke.

Fighting back a moan, Tsuna clapped a hand over his mouth.

"Going commando today, hm. How daring." Reborn remarked, smirking knowingly as a pink blush tinted the teen's cheeks. "Were you planning on tempting anyone with this?"

"I don't know what you're talking about." Tsuna strained to keep the nonchalance in his voice.

"Don't play dumb." Reborn massaged the bulge hidden under Tsuna's shorts, eliciting a soft moan from the teen. "Wearing shorts like these, a tight shirt like that. You're getting naughtier, Tsuna. I think I have to punish you."

Amber eyes glared at Reborn crossly. "You're punishing me for something that looks good on me?"

Slipping his whole hand into one of the legs of Tsuna's shorts, Reborn proceeded to give the teen a proper fondling, squeezing his balls and aroused cock between four fingers and his palm, while rubbing the tip of Tsuna's length with his thumb. The teen writhed and moaned, barely able to keep his legs from clamping inward automatically. Smirking at Tsuna's high level of sensitivity, the ex-Arcobaleno tugged the teen's legs over his shoulders, providing himself with enough leverage to slide Tsuna's shorts up higher; creating more tight friction on the boy's reddening skin.

"Ah!" Tsuna protested, but to no avail. "Reborn, it's tight!"

"I know."

"Y – You're being mean again." Petulant, Tsuna pouted at him, slender fingers gripping the rumpled sheets of his bedspread. "And you promised a treat, too."

Giving in to the boy's adorable pout, Reborn slid one leg hole of Tsuna's shorts to the side, exposing one ball sac and half the boy's length, which twitched in his hand when he stroked him.

"I did promise, didn't I?" Reborn smiled deviously, sticking out his tongue and flicking it over the head of Tsuna's cock.

"Oh! Mmm!"

The brunette bucked his hips as he felt a warm tongue start licking and prodding his tip, lapping up the precome that was fairly dribbling down by now. Tsuna whimpered as he propped himself up on his elbows to watch Reborn lick and suck him, making sure to produce lecherous slurping sounds that sent more blood pooling in the lower region of Tsuna's stomach. Tsuna could feel the pressure in his balls building up as Reborn fondled him thoroughly, experienced hands exploring every bit of his cock while his mouth worked his tip slowly, teasingly.

"Uhn, Reborn . . ." Tsuna writhed and moaned, trying not to buck his hips and thrust into the older man's mouth. "I can't . . . I'm going to . . ."

"Just come." Reborn said quietly.

Maybe it was the gentle tone of Reborn's voice, or the expert way he fondled him; Tsuna orgasmed and came, spilling his white come with a twitch and jerk of his hips. Reborn caught some with his hand, wasting no time in sliding Tsuna's stained shorts off the teen's legs and tossing them onto the floor.

"Spread your legs for me."

Without a word, Tsuna complied obediently, feeling like a lewd, wanton whore.

"Wider."

"Uhn." He couldn't hold back the half-moan, half-whimper as it escaped from his throat, causing Reborn to smirk in an infuriatingly knowing fashion as he stroked Tsuna's cock back into a needy erection.

Tilting his hand outward, Reborn poured some of Tsuna's come back onto his balls, letting the thick fluid ooze downward. Using one finger, he rubbed at Tsuna's hole teasingly, taking great pleasure in hearing the teen moan under his ministrations. When he decided Tsuna was ready, he added another finger, thrusting in and out gently so as not to hurt the teen.

"No . . . ah –!" Tsuna's toes curled; Reborn was making him feel good.

Sliding a third finger in, Reborn began to scissor him while thrusting inward, going as far as he could and as fast as he dared.

"Mmm! Reborn, please!"

"Please what?" Reborn sounded as cool and collected as ever.

He found Tsuna's prostate and rubbed against the tight bundle of nerves, causing the teen's breath to hitch as he cried out, no doubt feeling the effects of waves of pleasure rolling over him while Reborn teased him.

"Ahn, please . . ." Tsuna drew out his moan, fingers gripping the sheets with a relentless grip as his legs twitched.

"I won't know if you don't tell me, Tsuna."

Despite his calm demeanor, Reborn let slip a sharp exhale of breath as Tsuna squirmed, bucking his hips shamelessly in a desperate plea for more. The teen was willingly lying on the bed before him, legs spread and open invitingly as he whimpered and twitched – it felt like a dream come true. He pulled out his fingers. The squelching sound it created made Tsuna moan.

"R – Reborn?"

The clink of a belt buckle coming undone was his only response. Reborn towered over the teen, supporting himself with one knee on the mattress.

"I want you naked, Tsuna."

Lifting his arms as he sat up, Tsuna smirked at his tutor. "Then undress me."

Reborn paused, eying his charge with a skeptical look. "You're getting naughtier by the minute."

Kissing Reborn's well-toned stomach under his white shirt, Tsuna fumbled with the buttons. "That's because I know you like it."

The ex-Arcobaleno ran his hands through Tsuna's hair gently. Unzipping Reborn's pants, Tsuna smirked as he took in the man's noticeable bulge beneath his underwear. He'd noticed Reborn hadn't denied his earlier statement, either. Maybe he was growing soft. Tugging down the garter of Reborn's underwear, the teen slipped his slender hand inside and set his erection free.

"My turn." Tsuna murmured as his breath ghosted over Reborn's hard cock.

Reborn watched him with a slightly quizzical stare.

"Trick or treat, Reborn?"

x

My first try with R27. I'm more of a Colonello/Lambo shipper, but it's fun to experiment. Trick or Treat is basically all about the sex, which I plan to elaborate on in the next chapter. Thoughts?