The Book of Lilith
Copyright© 2024-2026 by Igor Blackfire
Chapter 3
Incest Sex Story: Chapter 3 - 15-year-old loner Lilith Ripinski is a pervert who wants to fuck her mean older brother Samuel. But there's no way she'd ever admit to those fantasies out loud, much less find herself in the exact set of circumstances required to make it a reality. Right? (A story about codependency, kink, and the consequences of too much internet porn.)
Caution: This Incest Sex Story contains strong sexual content, including mt/ft mt ft Teenagers Consensual Reluctant Heterosexual True Story School Incest Brother Sister DomSub Rough First Facial Masturbation Oral Sex Spitting Public Sex Small Breasts Slow
Within the hour, the four of them were back on the road. Sam and Lilith were both half asleep still, and Ezra only wasn’t ‘cause he was already downing Red Bulls. Breakfast had been gas station snacks. Ez didn’t care that much about things. Lilith liked that about him; he didn’t comment on her face at all, either.
But Lilith hadn’t gotten much sleep last night; four-and-a-half hours, tops, and she was feeling bleary-eyed. Samuel wasn’t much better, leaning against the door with his eyes closed. She scooched around to lay down across the back seat, her head coming to rest on his lap.
“Hi,” she murmured, looking up at him. She closed her eyes, and a few moments later, she was startled as Samuel started absentmindedly combing his hand through her hair. She felt a surge of warmth, hummed contentedly and soon fell asleep.
———❧———
Upon their arrival at the cabin, Annette made it clear that “the kids”—meaning Lilith, Sam and Allie—were to share a tent outside.
It was obvious to Lilith that their stepmom’s original design had involved all the not-her-kids sharing the tent, and Allie getting the extra bedroom in the cabin ... but Ezra was an adult man and Annette couldn’t really make him do anything, not to mention it would be kind of weird. So one short, tense standoff later, he was carrying his bags inside.
Allie, for her part, was ecstatic at sharing a tent with her siblings. “Are you gonna tell ghost stories again, Lills? You’re so good at those.”
Lilith could barely remember what her little half-sis was even talking about. That had been two years ago, which felt like another lifetime. Back-then-Lilith had been a bit less sullen and more talkative. The current-day Lilith was far more concerned with what the tent situation would mean for her and Sam doing ... stuff.
For some reason, she’d assumed that the one nice thing about this trip would be ample opportunity to try and convince Sam to take her virginity. She’d figured they could fool around in the tent at night, but ... with Allie there, she wasn’t so sure.
To its credit, the tent was pretty large; it was probably meant to contain a whole family of five, not three teenagers, so it fit them comfortably enough. Still, there was not going to be a lot of privacy to be had between the three of them, which became clear quickly as they began pitching the damn thing.
But the inside was divided into two separate sleeping compartments with a bit of space in-between the middle. That was quite promising. “So, Allie, we share one,” she murmured, “And he gets the other, right?”
“Yup!”
Allie was unreasonably excited, and Lilith felt a general sense of dread. Sam, for his part, seemed determined to spend as much of the trip on his phone as possible, in silent protest; so Allie’s excitement was at least useful in that it carried most of the work of setting up.
An hour later, their half-sister had also somehow befriended various kids from all over the campground. Sam was predictably unimpressed with an increase in 14-year-olds, and Lilith had crippling social anxiety, so together they took a rain check on whatever the hell Allie was doing, to just hang out by the tent.
They ended up in a hammock Dad had spun over the cabin porch, gently swaying in the breeze. Lilith was sort of halfway draped over Sam, for once glad for her small frame. Just enjoying each other’s presence like that, without fighting, was something they’d not done in years.
The wind blew. It was quiet and peaceful, and they stayed there, hardly moving, for several minutes. Just being close to each other. The gentle sway of the hammock lulled Lilith to a drowsy state.
She only realized she’d dozed off in his arms when she noticed she was drooling on the side of his neck. Mortified and flushed, she wiped it with her sleeve. “Sorry. I’m so sorry. God.”
“ ... Not the first time your spit’s been on my neck,” he intoned.
“Won’t be the last, either,” she promised, blushing.
Of course that was when Allie and a bunch of unknowns came down upon them with all the hubbub of a meteorite impact event. Lilith froze up, embarrassed. “Hey, guys! This is Jory, Katlyn, and Madison! They’re all siblings.” Allie gestured at her newfound friends, and introduced, “This is my sister, Lilith, and my brother, Sam.”
The gaggle, led by the ever-energetic Allie, immediately disappeared again.
The moment their voices receded into the distance, Lilith relaxed. “Man, I hate people,” she muttered.
“Don’t worry. People hate you, too.”
She swatted at him. Soon, they were in a full battle for dominance over the hammock, which unfortunately ended with both of them plummeting to the ground.
———❧———
Hiking. Restaurants. Shopping trips ... Lilith could only stomach so many forced activities. If given a choice, she’d opt out of everything and just stay behind in the tent reading fanfiction on the iPad, but of course no choice was given. If her stepmom and half-sis were to be believed, performative family bonding was stimulating to the human spirit, but the reality was just the whole fam getting progressively more annoyed at each other over the course of the day.
Lilith herself usually shambled quietly at the tail end of the group. She found perverse satisfaction in observing the rising tempers and the plummeting vibes; her own mood was already too gloomy by default to be brought down further by any of them, except maybe Sam, but aside from constantly pulling her hair he’d been downright nice to her today. Unsettling, really.
Dad always spent the entire trip trying to act like he really cared about outdoorsy stuff to impress Annette ... but he wasn’t fooling anybody, once the huffing and puffing and complaining started, and the day wasn’t even halfway through. As the CEO of a mid-sized regional importer of plastic cutlery and disposable containers, he didn’t get a lot of exercise in; Dad wasn’t fat, but he was definitely the fattest he’d been.
Similarly, he pretended like he was a present father-figure during these trips, offering unsolicited life advice to Sam and Ezra, which was pretty funny to listen to. Lilith never got advice, because clearly Ben Ripinski had no clue how to raise children of the female species. He left that to Annette.
Allie, meanwhile, was the one keeping everyone from eating each other alive by being plain happy and excited about everything, as usual.
When they finally returned to the campground after another one such pointless adventure, Samuel pulled her aside by her sleeve while Dad and Annette retired to the cabin. “Hey, Lilly, so y’know how there’s this big campfire every night where everyone goes to drink and get high and whatnot?”
“Yeah, have fun with that.” Lilith rolled her eyes. He couldn’t possibly be inviting her along? Socializing was a nightmare, and other people’s insistence that she engage in it constituted the bane of Lilith’s existence. Especially after a whole day of mandatory “fun”, there were about a hundred things she’d rather be doing.
“So anyway, I was thinking ... look,” he continued, as though he hadn’t heard her. From the corner of her eyes, she watched him ruffle around in his bag and produce the liquor he’d bought on Friday, the bottles with suspiciously bright and soda-esque looking contents, one pink, one blue. He handed her the blue one, keeping the pink for himself. “ ... I think tonight’s your night, sis.”
The bottle felt heavy in her hands. “ ... My night?” she asked. “What does that even mean?”
He pulled her hair, and she swatted the bottle at him with more force than strictly warranted. He wisely dodged; a second later he was on top of her again. “Yeah, tonight, Lilly,” he told her in a low voice. “I wanna see you drunk. You just need to loosen up a little. I guarantee you’ll have fun.”
Lilith bit her lip. It was very embarrassing that she was suddenly more inclined to agree just because he’d pinned her to the ground. Curse these feelings.
“ ... Maybe,” she allowed. “Can’t we just, like ... drink alone? Why do I have to go down there?”
“That’s just what people our age do, Lilly.”
Maybe he was right. Maybe tonight was ‘her night’, vis-à-vis her virginity etc.; she’d already crafted some one-liners pre-emptively just in case he’d object to things. “Yeah sure, it’s illegal. Big deal. So is smoking weed and underage drinking, buddy.” So she was well-prepared. And if she had to suffer a classic high school-esque gauntlet of terror before being able to shoot her shot, she could endure that.
———❧———
Gravel crunched under Lilith’s worn-out combat boots as she bounded down the hill, off the campground, towards the creek. In the twilight she could already make out the fire in the distance; momentarily, she imagined herself walking straight to hell.
She scowled, clutching her blue-colored booze like a lifeline. Like all the liquor Lilith had ever tasted, it had roughly the flavor of cleaning detergent, in spite of the deceptively cute coconuts on the label ... but Samuel had bought it for her, and so, she drank it bravely, holding her nose. The bottle was already a quarter empty just from sipping in the tent; she’d hoped that would calm the blaring anxiety around peers and parties that normally prevented her from doing this sort of thing.
At the edge of the treeline, Lilith came to a sudden halt as she registered the fact that it was dozens of people down there. Multiple dozens. Pop music blasted over tinny Bluetooth speakers, and she was indeed put in mind of an outdoor high school cafeteria experience, only with a big fire in the center. That had to be one of the rings of hell for sure.
She fiddled anxiously with the belt loops of her shorts. Shorts! What on earth had she been thinking? She didn’t have the body to pull off this kind of outfit ... She’d tried hard to look nice tonight, her hair done up in two little buns, but she felt so naked without a big sweater or something to cover her arms—
A hug enveloped her. “Lilith? Hey! What are you doing here? And why are you wearing my shorts? Whoa, what is that? Booze with Gatorade? Wait ... are we finally hanging out? Oh my gosh! Yess!!”
Lilith winced. Her whirlwind half-sister’s sheer enjoyment of life always seemed a little unwarranted. “ ... I wanted to wear something cute, I guess,” she answered belatedly. “Silly me, I guess! I look so dumb.”
“Are you kidding? This looks friggin’ great on you! You can honestly keep ‘em if you want! Your have long legs and stuff! And I never wear those anyways!” Then why did you pack them, Lilith wanted to ask, but before she could articulate herself, Allie was already pulling her towards the crowd. “C’mon! I’ll find us a nice spot by the fire ... Also, can I have a sip of that, pretty please?”
———❧———
Lilith probably should’ve seen it coming, but this whole campfire situation was clearly segregated by age. The older, cooler kids were in charge of the fire, the music and the general vibe of the situation. Since Lilith and her sister were neither old, nor cool, they ended up parked off in the periphery among the other little siblings.
Apparently her sister already knew half of them by name. Lilith stammered her way through various introductions, then quickly settled into the role of observer. It helped that Allie did three people’s worth of talking.
Meanwhile, Samuel was all the way over there—she could see him, but there were walls of sound and people between them. Maybe it was ‘cause of his facial hair, which made him look a bit older, but he mingled comfortably with people two, three years his senior ... and unfortunately, really comfortably with one redheaded girl in particular.
For the next two hours, Lilith just sat there scowling quietly, all jealousy and repressed rage, while taking recalcitrant gulps from her unholy blue concoction as if that would make things better, watching this bitch flirt with her brother.
The blue stuff did, in fact, make things a little better. The constant self-doubt in the back of her mind was muted. She found herself actually talking to her sister and these other kids, dropping a few quips that got a laugh out of all of them.
Regardless, Allie’s little friends left one by one as the hours passed, driven away by Lilith’s dark aura no doubt.
She held up her bottle, a little under half full now. The blue hue was weirdly pretty, illuminated by the campfire. It was probably a bunch of disgusting chemicals that made it that way.
Unfortunately, no matter how euphoric the booze was making her inside, her front-row view of what her brother was up to across the fire still got her sad and mad. Now Sammy leaned in to whisper something in Fat Red’s ear, and the girl blushed shyly in response. It was disgusting, and yet, Lilith couldn’t look away from it either. She took in every smirk, every giggle, every little flutter of Fat Red’s eyelids, and how she brushed Sam’s shoulders, his hands...
Ugh. She wanted to vomit.
———❧———
As the night wore on, Lilith and her sister got to claim seats closer and closer to the fire, but that did nothing to improve her experience. It seemed that the more people left, the more of Fat Red got draped in her brother’s lap. He even started playing with the girl’s hair, as some kind of dark parody of when he’d played with hers.
Lilith chuckled darkly. And maybe it was the fact that she was close to piss-drunk, but she could swear he sent an evil little smirk her way, too. As if to say, look, Lilly, I don’t give a shit about you, you dumb, skinny little freak.
Lilith’s grip on the bottle had become white-knuckled, so it took Allie a moment to pry her fingers off before she could take another sip. Then she followed her locked-on gaze, and rolled her eyes. “Gosh, Lills, what is your problem? You’re acting like he’s, like, your boyfriend or something! Hello! He’s your brother!”
“I know,” Lilith snapped.
“ ... Here, you can have the rest.” Allie handed the bottle back, and stood up. “I gotta pee. Do you need anything from the tent?”
Lilith hardly acknowledged her. Across from them, Samuel and Fat Red had escalated to full-on making out, sloppy style, and though she’d been staring all night, Lilith quickly lost the stomach for it.
God, she had to get the hell out of here.
Glancing down at the bottle in her hands, she was startled to discover it almost empty. Then again, her head was utterly spinning. Hey, where the hell did her sister run off to, anyway?
Lilith was dizzy on her feet. She stomped in the general direction of the cabins ... but that meant passing right by Sammy and Fat Red, and then she found herself come to a stop in front of them, fists balled at her sides.
In this state, she just couldn’t quite help herself.
“Hey!” she said shrilly. Bent forward, she made eye contact with Sam. “I’m sorry, I can see you’re ... busy, umm, making out. Nice to meet you ma’am by the way, I’m Lilith. Anyways, Sammy, can you please come with me real quick? I ... need your help with something. Sorry!” She did her best to sound genuine.
Sam sat up, but slowly. “ ... Are you actually serious right now, Lilly?”
“No, yeah, like, a thing, umm, just came up. It’s really important. It’s ... really bad. Annette is involved.” She had no idea what she was saying. That wasn’t the point. It was more about the general idea, anyway.
Sam sighed, ran a hand across his face, and locked eyes with the interloping redhead girl who seemed a bit confused. Lilith had no sympathy for her. “ ... Sorry, babe,” he groaned. “My sister, she’s like, a bit retarded.” He made a loopy gesture with his fingers. “Don’t worry, I’ll be back in five minutes, tops.”
Lilith stomped off, not looking back, ‘cause she knew Sam would follow. She hoped so, at least. She tried to sway her hips more than usual.
———❧———
It hadn’t always been war between Lilith and Samuel. In fact, he only took up the mantle of World’s Biggest Douche around three years ago, when he went to high school without her.
Up ‘till then, they had been very close, and often mistaken for twins; Sam’s growth spurt put an end to that. And it wasn’t just the growth spurt. He started smoking weed, and going to parties, and hanging out late with his new friend Faye almost every night doing god-knows-what, and he decided Lilith was his “little sister” all of a sudden, where she’d always just been his “sister”.
“You’ll get it when you go to high school, Lilly,” he’d told her. “Nobody hangs out with their middle school siblings. But once you’re here too, maybe we’ll go to the same parties.”
Alas, unlike her charismatic siblings, Lilith hadn’t made any lifelong friends in high school, only lifelong enemies.
———❧———
As Lilith led Sam away from the campfire, she took the path further into the forest, not back in the direction of the cabins, but he didn’t call it out.
Instead he made fun of her. “Thanks for the cockblock, freak. Also: ‘ummm it’s really bad’? Sounded like you pissed yourself or something. Heh.”
She ignored him. Her cheeks were already burning from the alcohol, so he could hardly make her blush. And also, the booze got her all confident. She twirled around with her arms outstretched ... and promptly tripped over her own feet.
Sam caught her. “ ... You’re completely shitfaced, aren’t you?” he asked, breaking into a grin.
She remembered how she was supposed to be mad at him, and wiped the matching grin off her face, pushing him away with a huff. “ ... Maybe. It’s whatever.”
“Damn,” he went, shaking his head. “If I’d known you’d be drinking that whole bottle, I’d’ve wanted to be there for it.”
“Well, too bad! Apparently you wanted something else more! Or should I say someone! So I hope it was fun ... I bet you were only doing it to make me jealous.” She bit her lip; she really hadn’t meant to say that last part out loud.
“Not everything in the world revolves around you, Lilly. Maybe I’m just really into redheads.” Yikes. Lilith couldn’t help but think of Faye, the other redhead between them.
“Fine!” she snapped. She threw her arms up in frustration. “I can’t even with you! Fine! Go back to Fat Red and fuck her silly for all I care.”
He raised an eyebrow. “Her name is Zoe.”
“Right. Like I care.” She kicked a pinecone away, hard. “So have fun with Zoe! That fat redhead bitch! I guess you don’t want old Lilly anymore, huh!” The alcohol was definitely empowering her hysterics, but it felt so good to yell at him for once.
A beat of silence passed between them. It was like she could still hear the deafening echo of her own yelling.
Then, a disbelieving grin spread on Samuel’s face, and he rolled his eyes. “That’s what you think?”
He grabbed her by the hair, bunching the locks around his hand and holding her head like that. Lilith shivered at the weird, possessive gesture of it. He brought his face closer. “Silly Lilly ... you don’t need to be jealous. Don’t worry. You’re always gonna be my favorite lil’ nutcase.” His breath smelled like beer, and he was breathing a little heavy, but who was she to judge?
She stared up at him defiantly for a second or two, before averting her eyes. “Mm ... I might need some reminding, y’know, every now and again, because I’m a mess. Alright? I’m sorry. That’s what it is.”
“I see ... I get it,” he drawled. “All this drama, and it’s just ‘cause you’re a horny drunk.”
Before Lilith could object to that qualifier, he shoved her against a tree, and all she let out was embarrassing little sound. Sam wasted no time slipping his hands under her shirt.
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