CONTENT WARNING: This story features body/skinsuits used by men to become women, implied incest, and a blowjob given by a young man.

Eric always hated how sexy and attractive the women in his family were. In middle and high school, his friend always had something to say about it. And as he grew older, he noticed how well-endowed his sister Samantha had become.

It’s always been a problem for him, and now that his sister was visiting from college for the holidays… he could hear her from her bedroom through the wall.

He knew it was wrong, but he couldn’t help himself. Eric made a hole in the wall that separates their bedrooms. He did it shortly after she came home, but what he saw was something he couldn’t believe.

It happened the second night Sam was home. Eric could hear her moaning, and he anxiously approached the peephole. Eric had only seen videos of women masturbating online, but now he would see a live show.

Sam was the envy of many of her friends. She had a thin waist that flared out to wide hips. Her legs were long and slender, and her massive breasts tested the strength of the zipper to her hoody.

That she had a killer body and an attractive face with a charming, energetic, and alluring smile, Eric couldn’t help but think it was unfair. His sister is popular, and everyone would flock to her.

Erica couldn’t even get a girl to give him the time of day, and now he was watching his sister masturbate. His heart raced as she unzipped her hoody, revealing a tiny pair of booty shorts.

Her hand snaked down past her waistband, and she relaxed her head back. “Damn, Sammy, your pussy feels so good~,” she said as her breath quickened.

Eric didn’t find it strange she would seduce herself in such a way. His sisters and mother have always been narcissistic. They knew what they had and spared no expense to flaunt it.

But thinking back on it now, the words meant something different. Eric only wishes he could record his sister’s sessions both for his own use and because no one would believe what happened next otherwise.

Samantha's squeezed her pretty hand between her thighs while soft lips let out a deep moan. It was amazing his parents would never say anything about it. Eric thought the alluring tone that coaxed his hand to stroke faster could be heard throughout the home.

While catching her breath, Samantha slid her shorts and panties down her gorgeous, thigh-high clad legs and, with her other hand, slid a pair of fingers back into herself.

“It’s not fair you get to keep enjoying my pussy,” she softly said. “Let me feel your dick, too.”

Using her fingers to spread her labia and rub along the other walls, she inserted a third, then a fourth, until her whole hand was pushed deeper. That’s when Eric noticed something pushing up against her lower abdomen.

She reached for it desperately and pulled it out of her. A glistening dark brown penis, coated in her nectar, contrasted with her rose-colored blossom and fair ivory skin.

After that night, his sister’s meaty shaft has been living rent-free in his head. Even the porn he searched to relieve himself had been centered around chasing what he had seen.

Kigurumi, masking, silicone prosthetics—he fell down a rabbit hole of shemale cosplay and crossdressers who wore realistic breasts made from silicone to cover their entire upper body and girdle that could give a person wide hips and hide their manhood behind womanhood.

But as he watched his sister throughout the week, when he would watch her through the peephole, those videos didn’t compare to whoever the person wearing his sister was.

That’s why, when he heard his sister through the walls of his room, he uncovered the peephole to watch her again. As he looked at the peephole, he noticed that something was off. It seemed larger than before.

His heart sank for a moment as thoughts raced through his mind. Paranoia was taking hold as he anxiously bent down to look through.

Before he could see inside his sister’s room, a large dark brown appendage forced its way through the hole, slapping Eric across the cheek.

“Hey, little bro,” He could hear his sister’s soft voice coming through the wall. “You’ve been watching me this whole time. Don’t you think it’s time to return your lovely sis the favor?”

Eric wasn’t sure what to do. Even though it was his sister's voice asking him, he knew there was no way this dick could belong to Sam.

“Pleeease baby bro, do it for me?” She asked in a sweet, pleading voice, followed by a terrifying, “Otherwise, you’ll have to explain to Mommy and Daddy why there is a hole here.”

Eric was losing his ability to resist. He reached out with his tongue and began coating his sister’s dick with his saliva. He’s only seen blowjobs online but only ever paid attention to the thought of a woman giving him one, not the other way around.

“You’re not too bad, kid. Make me cum, and maybe I’ll reward you.”

The thought of the person wearing his sister rewarding him made Eric feel motivated. He noticed how she would moan when he kissed along her shaft and paid attention to the little movements she made when he licked around the mushroom-shaped head.

She enjoyed it more when Eric started using his entire mouth. After she recoiled the first time when he used his teeth, he knew to be careful.

Eric started using his cheek more when his sister tried thrusting against it when she felt the soft flesh that felt like a woman’s inner folds.

It took time, but he could soon take the entire length of his sister’s cock before slowly sliding it out of his mouth, letting it ride along his tongue and moist lips.

He could hear his sister panting. Her moans told him what he was doing right and what he needed to change. “D-don’t stop, little bro,” it almost sounded to Eric like she was begging. “Your, haaa~, your big sis it about to cum~.”

At hearing that, Eric wasn’t sure what to do.

If he stopped now, his sister wouldn’t cum, and he wouldn’t receive his reward, but more importantly, if she still shot her load, Eric wasn’t sure he’d be able to clean it well enough that his parents wouldn’t notice.

Eric opened his throat as best he could, trying to take the entire length of his sister again. Bobbing his head up and down her cock, he could feel the tension in it rising, and with one last push, he could feel the hot white seed pouring down his throat.

***

Dan was catching his breath. He could still feel Eric’s mouth around his dick as he emptied his load. Dan's well-toned body was pressed against the wall, and his strong hands wanted to grasp the drywall.

As he felt his strength giving way, he only hoped that he would be able to remain standing until the end.

His legs shivered as Eric slid his mouth off, cleaning all the cum from his dick. Dan couldn’t hold it in anymore as he let out a long guttural moan before falling back, removing his dick from the peephole his girlfriend’s brother made.

He quickly stood back up and covered the hole with tape, hoping the boy in the other room didn’t get a chance to peek inside.

“How was he?” His girlfriend, Samantha, asked from her bed.

“If I’m being honest, better than you.”

Sam threw the book she was reading at her boyfriend, hitting him directly in the face, which looked identical to hers.

Dan made a quiet laugh and joined his girlfriend on the bed. He hugged Sam as he embraced her with his strong arms. Though he shared her appearance from the neck up, everything else was the man Sam fell in love with.

“You know, you could have joined us.”

“Yeah, no. That’s my brother. Now hurry up, and get back in here.”