His Sister's Keeper
Copyright© 2026 by ghostwritten after dark
Chapter 7
Incest Sex Story: Chapter 7 - Joey and Gwen Tanner, two close and loving siblings, are excited when they arrive for a six week summer vacation near a small lake. One lapse in judgement though, could turn their whole world upside down. To make it through the summer, they'll have to do things they never imagined. Can their bond overcome the challenges ahead, or will they be warped and manipulated into something they never expected.
Caution: This Incest Sex Story contains strong sexual content, including mt/ft ft/ft Teenagers Blackmail Coercion Drunk/Drugged NonConsensual Heterosexual Fiction Incest Brother Sister BDSM Humiliation Light Bond Rough Spanking Gang Bang Group Sex Anal Sex Analingus Cream Pie Double Penetration First Facial Oral Sex Petting Water Sports
Gwen woke up feeling the safe embrace of her brother’s arms around her. She didn’t know why the warmth of his naked body felt good pressed against her back, but it made these last few days seem more bearable. She shifted her legs a little to find a better position and felt a stinging pain in her backside. She’d nearly forgotten, as the pain radiated outwards, that there was nothing virgin about her anymore.
“Are you awake?” Her brother’s voice whispered in her ear from behind.
“Yeah, I am now,” she replied, grabbing his hands and tucking them tight under her breasts. She needed to be held closer, and he obliged.
Joey asked, “How do you feel?”
To which she answered, “Sore. In a little pain, but I’ll make it.”
“Good. I don’t want to have to explain to Mom and Dad that you died from butt sex.” Joey was attempting to make her feel better; it worked.
Gwen giggled. It hurt a bit, but it was worth it. “If that’s how I die, I’ll haunt you forever.”
“I’m not seeing the downside,” Joey said as he hugged his sister tight. Feeling the swells of her breasts on his hands and the closeness of their bodies, he couldn’t help getting hard. Gwen could feel it poking against her leg. She readjusted, and it settled between her legs.
She felt a strange pang of something as her brother’s hips pushed up against her. Gwen asked, “You hate this ... don’t you?”
“Hate what?” Joey asked, stopping what he was doing.
“Todd’s whole bullshit thing that women are just for sex. You don’t believe that, right?”
Joey was surprised, “No. Why would you think that?”
Gwen turned over and looked at Joey, “Sorry, I didn’t mean ... I’m just nervous for today. I just feel safer with you by my side through this.”
A growing sense of dread was building inside of Gwen. This was the first day she’d be hunted in public, and she didn’t know what to expect. She surprisingly had a reprieve the day before. She knew she wouldn’t be lucky again today. The real fear was not knowing what they would do to her. Except for her ass, which that safety too would be gone soon, they could do anything.
“I’m the one who should be sorry, sis. I can’t imagine what it’s like going through this.” Joey kissed her forehead. Gwen kissed his lips.
“It sucks,” Gwen said plainly. “My body is no longer my own, but I have you. I’ll need you to help me today, ok?”
“Of course, whatever you need.” Joey softly kissed his sister’s lips.
Gwen smiled, “I think the first thing I’m gonna need is a shower. Do you know if Mom and Dad are home?”
He shook his head, “No, they left about half an hour ago.”
“Good, ‘cause you need a shower, too. You smell like my ass. Let’s go.”
Gwen grabbed Joey’s hand and pulled him into the bathroom. She turned on the water, and they hopped in. She felt a small stab of pain as water raced over her sore asshole. Joey noticed her face cringe and put his arms around her.
“It still hurts?” he asked.
“I just didn’t expect the water to hurt. It’s ok now, though. Thank you, Joey.”
Joey looked at his sister, water rolling down her sexy body. He was getting more and more used to seeing it naked. There was a lingering guilt that he was benefiting from her misery. After all, he was standing naked in the shower with her. They were now having sex together regularly, something that neither of them had ever considered. He also had taken her brown cherry last night. Physically, it felt good, but emotionally, it was taxing. He hated hurting his younger sister.
“Joey?”
“Yeah, sis?”
“Could you wash my back?”
“Sure.”
He grabbed a cloth and some soap and got to work. His hands slipped and slid over his sister’s skin, starting at her shoulders and working down. It felt innocent enough, almost like a massage, but that started to change as his hands dropped below her armpits. He couldn’t help himself as his hands drifted to her sides and grazed the sides of her breasts.
She would go through a lot today, and he didn’t want to make it worse for her, but he couldn’t help it. She didn’t say anything, though, as he soaped up the sides of her tits. He managed to pull his hands away and carry on down to her lower back and above her beautiful, firm ass.
“Joey?” she asked sweetly, “Would you mind checking my ass and cleaning it too?”
“What?! Why?” Joey said in a panic.
“I want you to see if it’s red or bleeding down there, since it still stings.”
“Fine.”
Gwen placed her hands on the tiled wall and bent over to a ninety-degree angle. Reluctantly, Joey took hold of his sister’s ass cheeks and spread them apart. He had a clear view of her tight little knot and the entrance to her hair-lined pussy below that. He was hard as a rock again.
“It’s kind of red. I don’t see any tears or anything, though. No blood,” he said, running a finger over her back door. What he hadn’t said was that he could still see a few traces of lube and his cum, which he wiped away. He was still staring at her asshole and sex with impure thoughts rushing through his head.
“You can have me,” Gwen said softly. “I can see that you want it.”
“I don’t...” he was going to lie, but he knew there was no point. “I don’t want to make you do something like that. You’re going to have to do it a lot today without me adding to it.”
Gwen straightened up and turned to face her brother. “Yeah, I’m probably going to be fucked a lot today. Not make love, bang, or screw. They are going to fuck me. I don’t like it, and I don’t want it. I know I shouldn’t, but I do want you. As I’ve said already, right now, you’re the only one who has my permission, Joey. Tonight, no matter what, I’m going to be in your bed, and I want you to make love to me. But here and now, what would you like?”
Joey looked like a deer in the headlights. He couldn’t believe how coolly and calmly she said all that. If their roles were reversed, he’d be freaking the fuck out. He didn’t understand how she could remain so calm through all this. Plus, she could get pregnant.
Seeing her brother not make a move, Gwen decided to make one for him. She dropped to her knees in the tub and stroked his cock a couple of times before sliding it into her mouth. She looked into her brother’s eyes and sank his rod into her throat, as she’d been taught.
“God, Gwen!” Joey groaned, watching his sister’s head bob up and down the length of his tool. “You don’t have to...”
She pulled his cock from her mouth and jerked it with her hand, “I know, but we’re in this together, Joey. All summer.”
Gwen lifted his cock straight up, running her tongue along the underside from his balls up to his glans. Joey shuddered as he watched. It almost looked like his sister was enjoying this. Attaching her lips to the side of his shaft, she sucked along it till she reached the head, then sank it back down her throat again.
“Ooooohhh, fuck Gwen...” Joey moaned, his eyes locked onto her hazel ones. “You’re getting too good at this.”
Hearing that made Gwen happy for some reason, and she kept on sucking him back and forth. She’d pull out so just the head remained, then push it as deep as it could go. She could tell he wasn’t going to last much longer. While Joey was quick to please, she doubted her more seasoned tormentors would be as quick to cum. Still, though, she knew she was getting better, which might help make things end faster.
The look on Joey’s face said almost as much as his swelling cock. He was about to cum any second. While she could take it in her mouth and swallow, Gwen wanted to try something else.
“Nghhh!”
Just as Joey groaned, Gwen pulled his cock from her mouth and used her hand to jerk him as fast as she could. His dick lurched in her hand, and she watched the first rope fly out and strike her directly in the face, across the bridge of her nose and right eye. The next one splurted over her forehead, with a bit hitting her left ear. The third was a bit weaker, coating her lips and chin, while the fourth and fifth leaked out over her neck and tits till there was nothing left but a few dribbles. She opened her cum-covered mouth and sucked the remainder out, knowing it would be something she’d have to do soon anyway.
Joey’s eyes bulged out of his head when he looked down at his little sister, face glazed by his jizz. He felt her sucking the cum out of his dick like it was a straw before letting it out of her mouth. She just smiled at him; spunk had splattered across her face while his back blocked the shower spray.
“Why did you do that?” Joey asked, catching his breath.
“Just getting used to it. They’ve already done it to me once; we both know it’ll happen again,” Gwen explained. “Figured we’re already in the shower, might as well do it here. Hope you didn’t mind.”
Joey watched his sister wipe some spunk from her eye and hold a glob on her finger. She looked at it closely, squishing it between her thumb and forefinger, watching it stretch and separate. Instead of washing it off with the water, Gwen stuck the fingers in her mouth and sucked them clean.
“What the fuck, Gwen?”
“What?!” she asked, puzzled by her brother’s response. “I was just checking it out. It was supposed to go into my mouth anyway, so what’s the difference?”
“It’s just ... there is one, ok?” he stumbled over his words.
Rolling her eyes, Gwen noticed his cock had gotten hard again. She stepped past her brother and washed the rest of the cum from her face and chest. Joey just stood there and watched. By the time they’d finished their shared shower, Joey’s dick had dropped only to half-mast.
“I’m gonna pick out some stuff to wear today over top of my swimsuit bottoms,” Gwen said as they exited the shower. Heading to her own room, she didn’t close the door; there wasn’t really a reason to. She was surprised when she turned around to see Joey standing naked behind her.
“What’s up?” she asked inquisitively, but he didn’t respond. He pushed her backward onto her bed and climbed on top of her. “Joey?” she asked again.
“I want to pay you back,” he replied with a devilish smile. Joey kissed her lips first, before traveling down her body to do the same to her lower lips. He stopped at her chest to squeeze and grope her tits. His mouth latched onto her nipple, making Gwen groan with delight.
“Oh, Joey ... you don’t have to...” she said, her head rolling from side to side on the bed.
“I want to, and I won’t be able to tonight,” he said as he moved over to her other tit. Joey knew when they returned, Gwen’s pussy would be flooded with cum, and he wasn’t going to go down on her then. This morning, fresh from the shower, seemed like the perfect opportunity to munch on her muff. Leaving her spectacular tits, Joey resumed his voyage south into the thick undergrowth of his sister’s pubes.
The curly little hairs tickled his nose and mouth as he neared the enticing scent of her sex. Her legs parted as he approached, and her wet pink interior became visible through the sea of bush. Extending his tongue, he dipped it directly into her honeypot. Gwen moaned as her feet kicked at her bed sheets. Joey ran his tongue up the length of her slit and over the top of her clit.
“Aaah ... AAaaahhhhh!” Gwen cried as her brother lapped at her pussy.
She tasted divine, as Joey started at the bottom and licked his way up again. He liked watching his sister react to what he was doing. It was fun to see her moan and squirm on the bed. He even saw her massage her own breasts as he ate her dripping snatch. It was so sexy to watch, and she wasn’t being forced to do it.
“Oh, Joey ... right there!” she groaned, with her hips lifting off the bed occasionally to meet his mouth.
He focused his efforts exactly where she’d told him and watched her writhe on the bed. Her face was flushed, and she was breathing heavily. Her hands seemed to grip her tits harder and harder each time. He felt a shudder ripple through her body as her thighs tightened and closed around his ears.
“Oh ... GOD!” Gwen cried out. Joey didn’t stop and drank the sweet nectar she produced. Her vise-like grip on his head slowly released. He pulled his head free from her snatch, his ears hot and red, and his face dripping her wetness. She sat up and pulled him in for a kiss.
“That was great, Joey,” she said when they finally broke apart.
“I’m glad you liked it. You taste great, by the way,” he said with a grin.
“I do taste pretty good, don’t I?” Gwen replied.
Joey teased, “Careful, you’re turning into what they want ... a slut.”
“I’m only a slut for you, at least till this is all over. Then I don’t know what I’ll be.”
Joey kissed her again, “My sister. You’ll still be my sister.”
Gwen only replied with, “Maybe.”
Both changed into their swimwear. Gwen packed a small backpack with the normal beach supplies like sunscreen, a towel, and a book. She also packed several items Rachel suggested, such as a cloth, some pads, mints, and a pair of underwear. Over her pink bikini bottoms, she put on a short Jean skirt, another suggestion by Rachel. The one thing she didn’t bring was the bottle of lube. She didn’t expect to need that till tomorrow night, as per Todd’s rule. They tossed in a couple of bottles of water and some snacks, and they were out the door ... unsure of what they’d find.
“Are you ready for this?” Joey asked when they reached the door.
Gwen inhaled deeply, “No, but we’ll go out anyway.”
She reached out and turned the handle; the door opened, and they were hit with warm, fresh air. Each stepped into the sun as if it would be the last light of freedom they’d have before walking to the firing squad.
“It seems so quiet,” Joey said as they walked off the deck toward the lake.
“Did you expect them to ambush us and rape me right here?” Gwen chuckled.
Joey realized the absurdity of those thoughts, but he couldn’t shake the feeling of being watched. His head darted around, looking in all directions for Todd, Renny, or Cas, but he saw nothing.
“Maybe they couldn’t get beer and had to go back again,” Joey laughed as they passed the dock and shed.
“I don’t think I’ll be that lucky again,” Gwen said grimly.
“You won’t be,” Todd’s sudden voice from behind startled them. “We’re fully stocked for tomorrow.”
Todd casually strolled out from behind the shed, his bleach-blond hair looking white in the sunlight. He was wearing a plain grey T-shirt, purple swim shorts, and bare feet. He seemed unbothered by anything going on around him. It made him even more unsettling, as if he knew he was untouchable.
Gwen tensed up, while Joey looked around for the other two accomplices; neither could be found. Gwen and Joey’s attention turned toward the ringleader, knowing it couldn’t be good.
“Morning, Joe,” Todd said, as if he were on an afternoon stroll. “ ... a birdie told me you both were out and about yesterday. Gutsy, I gotta say.”
“Um ... hi, Todd,” said Joey, “It’s a nice day out, isn’t it?”
“It is, Joe. That it is.” Todd walked up between the siblings, putting his arms around their shoulders. “Now I know you’re both excited to get started. I know the boys certainly are...” Todd eyed Gwen up and down, searching for a sign of weakness, but she stood her ground.
Todd carried on, “You’re fine for now, by the way, they won’t hunt you till noon. I would like to have a quick chat first. My sister told me some things when I got home ... surprising things. Mainly, as I said, that you two weren’t cowering all day. That she met you both at the beach, and she even taught you a few tricks. Is that true?”
Gwen straightened her back, staring defiantly at Todd. “Yes, I’m not hiding from you.”
He smirked at her empty posturing. “Good, then you know how to suck a dick properly. This is good, excellent progress already.”
Todd ran the backside of his hand down over her cheek. Gwen couldn’t tell if it was a threat or something else. He stopped when he reached her chin; the top of his hand held her head in place.
“I think you’re pretty lucky, Joe. When we break her, she’ll make an obedient pet for you. The strongest wills can become the most docile of sheep, once transformed,” he said cryptically in a flat monotone voice. “You hate me now, I know, but you have the capacity to understand what I’m doing.”
“I’m not a sheep, or cow, or any other type of pet,” Gwen said angrily, pushing his hand away from her face.
Todd’s grin grew wider. “Don’t speak out of turn again, understand?” his voice stayed eerily calm. “Punishments for disobedience can be ... severe.” His lips curled on the edges as he said the final word, almost daring her to challenge him. Gwen backed down, and her eyes looked away.
“What if she gets pregnant?” Joey asked, taking attention away from his sister.
“All the better,” Todd replied with cold delight. “If it’s a boy, you can train him to be a man ... the right way. If it’s a girl ... well, that’s up to you as her uncle or father, but teach her what a woman is actually for, just like her mom.”
That thought and Todd’s attitude chilled Gwen and Joey to their cores. Todd seemed so coldly callous about what that might do not just to their lives but to the lives of future generations. Was he crazy, wanting to create a new societal order? Neither of them could imagine ever doing anything as he said; then again, neither ever thought they’d be sleeping together every night either.
“May I ask a question?” Gwen asked nervously, afraid to set Todd off.
Todd nodded.
“So, what happens now?” Gwen asked, “Am I just going to be pulled away and fucked all day long?”
“You can be ... if you want, or if we feel like it,” Todd explained. “You’ll do whatever I, Renny, and Cas tell you, and then finally Joe here. Many days, you’ll mostly be left alone, probably pulled aside for a quick one now and then. Other days ... might be more active.”
“What does that mean?” Joey asked before Gwen could press her luck with another question.
“Well, Joe, we’re men, and we have needs,” Todd spoke coldly. “There are other men here who might also want their needs met ... for a price. Maybe mon-”
“You’re going to sell me?!” Gwen blurted out, unable to stop herself.
Todd’s face went dark as he stared at Gwen menacingly. “I prefer lease because we still own you, but yes. You are a commodity I can use to curry favor, gain resources, or spread the good word. A word you still haven’t learned is to keep quiet and not interrupt me. You had your warning; now you get a punishment.”
Gwen grew worried, her confidence wavering, “Please ... I’m sorry.”
“Yes, you are.” His words felt like bites. “Let’s see what you learned from my sister...”
“But you said we had till noon,” Joey protested.
“I did, that’s why I’m not doing something worse. Let’s go, all of us.”
Todd sauntered over to a wooded patch of forest just before the beach. It was dense enough that you couldn’t see more than twenty feet in before the view was blocked by foliage and trees. He led the Tanners in, cutting a straight path through like he’d been in there hundreds of times before. He found a spot he seemed to like and stopped.
Snap! He snapped his fingers. “Come. Here,” he said confidently. Knowing not to piss him off, Gwen obeyed. She walked forward and stopped a foot from Todd.
“Down,” he ordered. Gwen caught on and understood. She knelt in front of Todd and reached up for his purple swim trunks. His hard cock sprang free directly in front of her mouth.
She shuffled forward on her knees, and the twigs and dead leaves were scratching her. Licking her lips and opening wide, she took Todd into her mouth about halfway. Remembering the lesson from yesterday, she adjusted her throat and head, then quickly took the rest until it tickled the back of her throat. Her nose was pressed into his pubic hair, and his balls rested next to her chin. She held it there for a few seconds, so he knew she did it, then pulled away, before repeating the process.