The concert ended as one would have expected it to end – with rousing applause. Luna and her bandmates took their bows and played their encore to the campus lawn teeming with thousands of students and visitors, bowing once more when all was said and done. In the audience were nearly all of the Loud siblings: Lincoln, Lynn, and Lucy most obviously, but Lori and Bobby came down with their daughter to see; Luan had showed up, always there to support her closest sister; Lana had swung by after her day job to catch the show; Lisa had kept her promise to watch and spend time with her siblings; and finally, Lily had arrived with their parents to see both the show and tour the campus, looking forward to enrolling at the college herself.

Once the concert was over, the horrifying reality that their parents were there made Lincoln and Lynn almost as pale as Lucy. Their parents… What if they wanted to visit the apartment? They hadn't cleaned up at all! Forget the mess, what about the stench of oversexed adults?! Lincoln tried to distract himself by playing with his young niece, always having a way with young children and getting her to laugh easily. Lynn followed his lead, choosing to distract herself with Lori and Bobby's child then worry about their parents. Lucy had no problem hiding her emotions, simply behaving as she always behaved.

"You two should literally be parents," Lori commented, drawing a blush from Lincoln and Lynn, "You're both really good with little Rosa."

"I don't know, aren't we a little young to be thinking about that…?" Lynn avoided looking at Lori.

"As much as I wish we were still that young," Lori sighed, "Lily is literally going to college. Lincoln's almost in his thirties! Which means I'm… old."

"You look like you've hardly aged a day since high school," Lincoln assured her.

He wasn't lying, either. Lori had aged astoundingly well, especially since she had already had a child. She was roughly Lynn's height, had shapely hips and thighs, and a bust just under Lucy's in size. Her face was smooth and youthful, barring the barest of wrinkles around her eyes from the trials of parenthood. There was nothing in the way of sagging or blemishes. Honestly, only Leni had aged any better. Lincoln found himself examining Lori's body in earnest and caught himself, noticing an almost-proud smirk on her face. Had she noticed him doing that?

"Ronnie Anne!" Bobby chuckled as he wrapped his powerful arms around his younger sister and lifted her up from behind in a bear hug, "Oh, it's so nice to see you again!"

"I literally only moved away a semester ago, you idiot!" Ronnie Anne blushed in a combination of embarrassment and at the proximity of her brother.

"You could still visit," Bobby noted, sadly, as he let Ronnie Anne down. Unlike Lori, he'd changed a great deal since high school. His multiple labor jobs had finally caught up with him, filling his once-thin frame up with muscles. He wasn't anything like a body-builder, but he was brawny. Combined with his short beard, and the fact he was usually laughing or grinning about something, Lincoln and Ronnie Anne often joked he looked like a pirate. "I hear you're hanging out with Lincoln more often. Are you two dating again?"

"Yeesh, you sound hopeful," Ronnie Anne rolled her eyes, "We're… dating."

"This is literally perfect!" Lori beamed, hugging Lincoln close to her breast at the same instant Bobby wrapped his muscular arms around Ronnie Anne and drew her close to his chest. Both younger siblings spared pitiful, blushing looks at each other. "We'll be like double-family, or something, if you two get married!"

"Because that's not weird," Lynn snorted, only half-listening as she focused on entertaining Rosa with Lincoln's car keys.

"I guess if you got married, you'd technically be marrying your brother-in-law," Bobby tapped his chin, snickering at the idea.

Soon the others arrived and Lori and Bobby were distracted by exchanging greetings with them, giving Ronnie Anne and Lincoln breathing space. Both of them felt a deep-rooted sense of shame at uncomfortable feelings that had surfaced during their embraces with their eldest siblings. Lincoln had already come to realize he had a latent sexual attraction to all of his older sisters, but he hadn't expected himself to simply fall into checking Lori out like that. For Ronnie Anne, she had only considered being attracted to Bobby once, after Lynn and Lucy pointed out how similar Lincoln was to him. Now that the seed of incestuous thoughts had been planted – and she had been exposed to such actions through her lovers – seeing Bobby again had awoken in her forbidden desires. He was attractive, and a very generous and loving man. Honestly, he was the only man she had ever loved besides Lincoln. The two shuddered as they forced the revelations down; no need to worry about them anyway. After all, Lori and Bobby were married; neither of them would be interested in something like that.

"Heya, Linc!" Lily greeted, beaming as she rushed up to them. Despite being an adult, she still looked like a child to Lincoln: blonde hair held up in the back by a simple clip, wearing a black overall skirt over a lavender blouse, her full height only coming to his shoulders. Bright, blue eyes and a youthful face almost convinced Lincoln that Lily was still in middle school. That, and the fact her chest was flatter than Lynn's.

"Hey, Lily!" Lincoln returned the affectionate greeting, enjoying a hug with a sister that didn't elicit a sexual response. Lily was so young and pure; she'd never be sexualized by him. At least, that's what he was sure of.

Lily had her own ideas on the subject, of course, and as she hugged her older brother and idol closer, she took in the scent of his body soap and cologne. She struggled to keep from outwardly displaying any sexual thrill she got from it. Damn her brother! Plenty of boys were interested in her – after all, she was attractive like all her sisters – but she found all of them repugnant. Tech-obsessed, cruel-humored, and utterly selfish louts. Frankly, her brother's selflessness growing up had been unique even for his generation. She could never find a single guy close enough to her age with anything approaching a decent temperament. Lincoln was there, though; always there. Handsome, charming, intelligent, thoughtful, kind… Lily couldn't help but wonder if the fact they had to be born ten years apart and as siblings was some sort of punishment for something she did in a past life.

"Alright, I need to breathe," Lincoln joked, breaking the hug, "Looking forward to going to college?"

"You know it!" Lily kept up her enthusiasm despite disappointment at having to end her embrace.

Lincoln and his lovers were completely oblivious to Lily's affection. Even paranoid about sisters spontaneously falling for their brother, Lucy and Lynn completely bought Lily's act. Of course, by the same token, Lily would never have guessed another sister had laid eyes on their brother; she certainly never would have imagined he was in a relationship with three of them. By the time she had become old enough to think of her brother in such a way, nearly all of her siblings had moved out of the house. She had only ever been close to Lincoln and Lisa, and the latter had never displayed anything like romantic interest towards Lincoln. Thus, she had never been exposed to the possibility that she wasn't alone in her incestuous cravings.

I suppose it's all just a pipe dream, she lamented to herself.

"Stellar performance as always, kiddo," their father congratulated Luna with a proud chuckle.

"It was so sweet of you to dedicate that last song to your brother," their mother sighed, "It's just a shame Leni and Lola couldn't make it."

"Lola wanted me to pass on that she was sorry," Lana's tone suggested she didn't like serving as her twin's messenger, "Her loss, though; this was a great show."

"Makes up for all those first concerts I ruined, right?" Luna half-joked.

"No," all of her siblings except Lincoln responded, deadly serious and in tandem.

"Tough crowd," Sam chuckled, tugging at her collar, "Anyway, how you two doing, Mr. and Mrs. L?"

"Yeah, with the youngest moving out soon, how you holding up?" Tabby asked, earning a smack to the back of her head from Luna, "Ow! I meant… uh…"

"We're fine," Lynn Sr. forced a smile, "We've been preparing for this day since Lori moved out."

"I'm trying really hard not to cry," Rita confessed, "Is that little Rosa?"

"Not so little anymore!" Lynn chuckled, lifting her niece up, "I can hardly lift her! What's your mother been feeding you?"

And on and on the familial tit-for-tat went. Lincoln hanged back, smiling as his initial nausea passed. It was like being in a regular family again, and he found the experience enjoyable. Even Lisa looked like she was enjoying herself, taunting Lori with suggestions for genetic experiments on Rosa. At least, Lincoln hoped they were merely taunts… Then he noticed Luan for the first time and realized she had been watching him, unusually quiet. Once she saw him noticing her, she looked away, blushing. Without drawing attention to himself, Lincoln made his way to her.

"Hey Luan," he greeted, "Are you alright? You've been really quiet."

"Actually, I've been meaning to talk to you," she admitted, jerking her head at the others, "privately. If you don't mind."

Lincoln nodded, growing concerned. He felt the familiar unease grow inside him once more, the creeping sensation that someone had uncovered his dirty, poorly-guarded secret and was about to perform an intervention on him. There was, also, a tiny part of his mind that wanted to believe yet another sister was wanting to join in, and he felt great shame at that part. It also made him feel stupid; even if 9 sisters were interested in him, it still wouldn't guarantee all 10 were. To assume that every sister he talked to privately wanted to love him as a romantic partner was asinine.

As soon as Luan led them into one of the college buildings, she took him aside and ensured there was no one else around. Once she was confident they were secure, she forced her brother's back against the wall. Before he could process what was happening, she had her lips locked to his; before he knew what he was doing, he kissed back, melting into it as if it were as natural as making out with Lynn, Lucy, Ronnie Anne, or Luna. After a moment, faster than it took for the young man to realize he'd so easily given into her kiss, Luan broke it off and grinned.

"Sorry about that," she giggled, "I was originally going to ease you into the idea first, but I couldn't help myself!"

"L-Luan, I-"

"You're dating Luna, Lynn, Lucy, and Ronnie Anne, I got it," the comedian rolled her eyes, still smirking good-naturedly, "I figure, what's one more?"

"I can't just cheat on them…"

"What's the matter? You getting so much pussy you're turning into one?" Luan grinned, cheekily, "Get it?"

Lincoln glared at her, unamused.

"Alright, I admit that one was a little tasteless," Luan sobered up, "Look, I'm sure you've heard this more than once by now, but I've had feelings for you for years! Luna and I both knew about each other's crushes on you. We'd talk about it pretty often, dreaming of the day we could share you…"

Lincoln found himself frowning sympathetically as Luan trailed off, lost in her own disappointment at how things had turned out. Lincoln gently stroked her cheek and she clasped his hand, holding it close to her face. They stayed like that for several moments until the sound of a door opening caught their attention. Entering the hallway and looking right at them was Luna, Sam, and Tabby.

"Dudes, there you are!" Luna exclaimed, but her excitement died down as she realized what was happening, "Ah… right. Sam, Tabs, I need you two to do me a favor."

"Running interception again?" Tabby sighed, crossing her arms.

"Please?" Luna pouted, slightly.

Tabby rolled her eyes but went off to comply. Sam gave a wan smile, giving a thumbs-up to signal she understood this was a family matter. Luna returned her attention to her siblings, confident that Tabby and Sam could keep the others from finding them.

"I'm glad you could make it to my show, sis," she began, clearly uneasy.

"Relax, Luna," the comedian laughed, "I know what you and Lincoln have been up to, and I don't hold it against you. Honestly, given the opportunity, I'd have probably done the same thing."

"Oh. Well, that's kind of a relief."

"That said, Lincoln here's resisting my feminine wiles," Luan continued, "I think he wants permission from one of his girlfriends."

"Linc, bro, this is Luan we're talking about here," the rocker smirked, wrapping an arm around her former-roommate, "Lucy, Lynn, and Ronnie Anne will understand. Luan and I are a package deal; if they accept me, they've gotta accept her."

"Well, I guess that makes sense…" Lincoln lied. That didn't make sense at all! Still, with his dick already fit to burst through his cramped jeans, he wasn't reluctant to accept a fifth girlfriend. A small part of him felt selfish for it, but Luna was right. To accept one and not the other was cruel; the pair had been nearly as inseparable as Lana and Lola. "Alright. To be honest, I love all of you – you all know that. I can't say no to any of you."

"I'm glad to hear it, because I've got a special comedy show set up for you tomorrow afternoon," the comedian beamed, "and I want you to be there. There's even a guest performance planned."

"And it's an actual comedy show?" Lincoln narrowed his eyes, "It's not just a metaphor for sex?"

"I can't believe you think I'm that fast!"

"You literally just cornered me and kissed me without even saying anything!"

"Are you coming or not?" Luan deadpanned. Her brother nodded. "Great! Now, one more thing… I'm feeling a little greedy. Mind if I get a little taste?"

"Another kiss? Sure!" Lincoln grinned, having enjoyed the sensation of Luan's soft lips.

"I love that enthusiasm," Luan giggled, stroking the crotch of his pants, "but I was hoping for a taste of something else. Luna, would you like to help me? Sharing is caring, after all."

"I think our bro would love that," the rocker smirked, getting to her knees.

Lincoln bit his lip and looked around, anxiously. This was a little-used classroom building, and since it was the weekend and everyone was at the concert, it should be abandoned. Still, he hadn't survived this long by not being cautious. As soon as he felt his trousers and underpants slip away, however, Lincoln relaxed into the tender caresses of his sisters' hands. He panted slowly as he felt them work his shaft and balls, enjoying Luna's calloused fingers and Luan's smooth palms in equal measure. Then they set to work with their mouths, taking him into their soft lips and running their silky tongues along his length. He couldn't help but grin at their bright eyes and warm smiles as they sucked him off. Within minutes he felt weak in the knees, but how could he not? With two beautiful brunettes on their knees before him?

"He's close," Luan noted between long sucks, "Mind if I take it?"

"Take it?" Luna raised her eyebrows, "You think you can handle it? I thought you and Benny never… y'know."

"You guys always tell me I have a big mouth," the comedian giggled before beginning her final ministrations on her brother. She took more of his length in than before, at a faster pace.

Lincoln resisted only a little bit, letting the pleasure build to a crescendo before releasing his seed into Luan's mouth. He let out a sigh of ecstasy, leaning back against the wall and looking at the ceiling. When he looked down, he was surprised to see Luan carefully locked to his dick, her throat visibly working to gulp down his cum. When she slowly pulled off of him, he was clean. She opened her mouth in a grin, sticking her tongue out to show that not a drop remained, and Luna whistled, clearly impressed.

"Y-you'd give Lynn a run for her money," the man confessed, catching his breath, "We should probably stop here."

"Yeah, probably," a new voice said, drawing all three of their attentions. Lana looked back at them with a smirk on her face, "Yeesh, and you guys used to get on me for eating slime and playing with bodily fluids."

"L-Lana, this… isn't what it looks like?" Lincoln facepalmed as soon as the words left his mouth.

"I might not have gone to college, Linc, but I'm not stupid," Lana deadpanned, "Look, I'm not judging; we all have our dirty secrets and kinks."

"So you won't tell the others?" Luna asked, hopeful.

"I have to tell Lola, naturally," the mechanic shrugged as she approached her siblings, passively gripping her brother's dick and studying it, "Huh, so that's what that feels like. Cool."

"Uh…" Lincoln looked at the others, confused, but Lana released him just as quickly, as it if were a passing interest and there had been nothing weird about the action.

"Anyway, the others are looking for you, so you might want to zip yourself up," she explained, wiping her hands off on the chest of her overalls like she always did when she 'cleaned' them, "And don't worry about Lana trying to use this to blackmail you guys; she won't tell anyone, trust me."

With no real choice in the matter, Lincoln zipped himself up and followed his sisters back to his family, trying to process exactly how weird his life had become in such a short span of time.

…

Lisa watched her siblings return, sure to keep her usual, calculating demeanor on. Even then, her eye twitched in annoyance. It was pretty clear to her from how Luan wiped her grinning mouth and winked at their blushing brother what had happened. The fact Luna was blushing and grinning too didn't help much, especially since she had already heard about the rocker joining in. Why on Earth was Lana smirking? Was she involved now?! Seriously, how many others would jump onto this bandwagon before all was said and done?

Lisa felt a heat in her core and failed to stop from rubbing her thighs together, briefly. Only Lily noticed, raising an eyebrow, but she had always been intelligent beyond her years and left it alone, for which the scientist was thankful.

This was getting out of hand, Lisa decided. Sleeping with two or three sisters was one thing, but- who was she kidding?! It was getting out of hand as soon as it started! She needed to do an intervention of some kind, something to help her siblings see reason.

She felt the heat in her core again as she caught Luan and Luna sneak a kiss with their brother, somehow completely unnoticed in the crowd as everyone else was distracted talking to Sam and Tabby.

Or, the scientist mused, perhaps invitation would be a more practical use of my energy...

A/N: Just going to point out again that Tabby breaking up and getting back together is a common thing, so don't worry – she'll be back.

My usual formula for writing this fic put me in such an intense writer's block, that I'm going to change how I'm doing things just to keep the story flowing a little easier. No more multi-chapter arcs for each character.

Rosa is a direct reference to Rosalina Santiago, an OC by Warden-Sigma. While the character I'm using only uses part of the name and has the same parents as the OC, I feel I should still put in a disclaimer. Additionally, I'd recommend checking out Warden-Sigma's artwork. They do quite a few humorous Children of Sin shorts.

I might as well give actual ages at this point. Lily is 18, which means Lincoln is 28 and Lori is 34. You can figure the rest out.