Niki's Descent
Copyright© 2026 by TailWeaver
Chapter 2: Learning Her New Role
Incest Sex Story: Chapter 2: Learning Her New Role - Niki should have never taken that shortcut through the woods, at least not on the same day she had dared herself to go commando. What happened both shocked and aroused her, and once that path had been trod once, well, you will see just how many times Niki decides to walk that particular type of path. Note - not all codes are the same/available. This was originally published before my great purge, and is part of my cleanup/rewrite - being one of my older stories, it had quite a bit of work done
Caution: This Incest Sex Story contains strong sexual content, including mt/ft Mult Teenagers Coercion Consensual School Sharing Incest Sister InLaws MaleDom Group Sex Anal Sex Exhibitionism Masturbation Voyeurism
Cooper pulled out after the knot had finally died down. His cock slid out, covered in his cum and her juices. With the knot out, the large load inside of her began to leak out, making a big mess on the floor. “I think you need another breeding. You just can’t get enough of them after all,” Max said with a grin as he stood up, walked over to her, and knelt down to pet her, snapping the leash onto her collar. “I’m going to breed your dirty dog cum filled pussy next. I bet the thought of that excites you, doesn’t it, you little doggie whore?” he said with a chuckle. He continued to stroke her hair before grabbing hold of it and pulling her around to face the puddle of dog cum mixed with her juices. “Before you get to feel what big brother’s cock is like, you will need to clean up this fucking mess you made. I want you to lick it all up, you dirty slut. Taste the cum of the dog that just bred your dirty cunt.” He pushed her head down into the puddle, forcing her to lick up the mess she had made.
As he humiliated her by pushing her face into the puddle of cum and forcing her to lick it up, she felt her cheeks flushing red, as her bottom rose up ... Her mind was only slightly distracted by his comments. The juices, mostly doggie cum, were rather like raw eggs, she finally decided, though the taste was a bit more peppery or something. The way he had pushed her down into it, though, had triggered some agreement in her mind, and she went about licking at it w/o thinking about it overly much.
Max watched her work for a few seconds before sitting back down. He reached down and pulled Niki up onto his lap, facing him, looking down into her eyes and glancing at her glistening pussy between his legs. “You ready to take your big brother’s cock, you dirty slut? Wanna feel what a human cock feels like? Or maybe you are just a sick pervert who only wants dogs inside of your cunt. It wouldn’t surprise me,” he said with a chuckle. “Either way, you are taking it without question,” he said with a grin as he unzipped his pants and pulled out his already hard cock, smacking it a few times against her tummy.
Niki was in shock, somewhat, as he undid his pants, and she was suddenly confronted with his large, hard, throbbing cock, easily two or three inches larger than what she thought she saw on Cooper. It was so thick and hard, she could see it pulsing as it flipped up into the air, freed from its cage. “Yes...” she answered finally, not really sure if she was truly ready. It sure looked like he was going to try to make it fit inside of her! She moved her knees a bit farther apart, trying to get more comfortable on his lap as she stretched internally, imagining what it would feel like.
Max patted Niki’s hair softly as he pulled her up a bit closer, giving another smack of his cock against her tummy and leaving a string of pre-cum between him and her tummy. “Don’t worry, I will make it fit, sis,” he said with a smile. He grabbed her sides and picked her up, hovering her above his hard, throbbing cock. He began pulling her down slowly and teasing her cunt’s entrance by moving her back and forth right on the tip, letting her feel its hardness against her lips before pushing inside.
Without warning, he finally pulled her down much further, his cock pushing up deep inside of her tight pussy. He forced her to feel every single inch as he pulled her down onto his shaft, the dog cum from before providing a gross lubricant and making his larger cock have an easier time sliding inside her.
Partway in, she felt so full, it was like he couldn’t go any deeper. She felt him lift her again, pulling her up and off of his prick, stopping right when she was back at the tip. “Come on, take it all, you dirty little whore. Take your brother’s big cock into that dirty dog cum filled cunt of yours!” he said. He followed up by slamming her down much harder. The sheer force stunned her with its completeness, with its total ownership of her body.
Niki had not really seen any way to make him stop, and even if she tried, she doubted it would do more than make him slap her and tell her to shut up, so she kept quiet. As his cock speared her cunt, she felt every inch of his thickness, and the first real cock she ever had, the first human cock was her step-brother’s. Forever after, she would be a doggie bitch that rode her brother’s cock while still wearing the tattered remains of her school uniform. “Ungghh,” she groaned as he slid her down, trying to drive his huge cock deep inside of her. Over and over he pushed, his prick-head pressing against her raw cervix, still swollen from the repeated hammerings she’d received from the dogs. Insistent, he lifted her up again, and again, and slammed his way in as deep as he could. She swore she felt him stab her in the stomach, and her hips split wide. She felt as if he had torn something. She was spitted on his cock like a shish-ka-bob. A bouncing, drooling, wailing shish-ka-bob that drained juices all over the stick.
“That’s it, take it. You like that, you dirty slut? You like being my little bitch?” he asked. He reached one hand up and grabbed onto her leash, wrapping it around his hand and pulling it forward to bring her into a kiss as he pulled up and pushed her back down, making her take every inch of his cock as he hit the back of her cunt.
She could feel him tugging on her, pulling insistently, forcing her to take his tongue, his lips, as he ravaged her mouth while he fucked her virgin-no-more pussy. Eyes closing, she gave herself over to his manipulation, feeling his cock throb and pulse within. She had no idea what was going to happen now, but her nearly numb cunt continued to throb under his attack. So much had changed in the last couple of hours. She had been fucked. Hard. A lot. And now her brother, step-brother actually, was taking advantage of her indiscretion. She might be more upset about it if she weren’t practically cumming with every stroke. She had never imagined sex was going to feel like this. And if she was going to be bad - at least for today - she was going to be oh so bad.
Looking down at her, Max began thrusting, using all of his strength and weight into each thrust, taunting her as he used her, making it clear she was now his. “Take it, my little dirty bitch. You are such a dirty pervert for enjoying this, for enjoying the feeling of your own brother’s cock inside of you. Especially for enjoying the feeling of being filled with dog cum at the same time. You are a sick girl,” he said as he pounded her fuck hole before taunting her again. “Beg for your big step-brother’s cum, you dirty slut. I know you want it. You want to feel it fill you up, you need it, you whore!” Every word came with a deep thrust, one hand holding up her legs to make sure he could go deeper. The other hand fondled her chest, tearing at her shirt and ripping it open. Tearing apart her thankfully front-hooked pale blue bra, causing it to fall to both sides, exposing her comparatively flat chest, as he continued his assault on her tight cunt.
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