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Crimson Thighs

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Megumi is in her period and she wants her big brother sukuna to fuck her because being in her period makes her horny. (all characters are adults) She is 18 and 151cm. Sukuna is 197cm. they have a 1ncestuos relationship since gumi was a ch1ld ''Kunaaaaaaaa! Im on my perioooooood!'' Sukuna looked at her with indiference. ''Well the fuck you want me to do?'' ''Fuck it better...'' Gumi put her body infront of him, her panties were stained with blood and it was leaking under her thigh Sukuna tried to look over her to see the tv. ''Don't you have a boyfriend? Go tell him to fuck you and move you don't let me see the tv'' ''He won't fuck me because''It gets to messy Megumi, you will get everything dirty''or something like that.'' She cross her arms under her small tits Sukuna sigh and stop trying to look over her. ''And why are you dating a pussy that is scared of eating you up? A real man isn't scared of getting a little dirty'' With a dead tone megumi simply respond. ''He is paying our bills'' Sukuna's tone turn friendly ''Riiiiiight, what a great man he is, keep dating him, bsby'' ''KUNAAAAAA, my pussy is achyyy!!!'' She said and kicked his ankle, he flinch and an stared at her angry ''Damn bitch the fuck you want me to do? I can't control your fucking pussy'' ''Fuck me'' ''Fuck you what?'' He looked at her smirking ''Kuna-nii, please fuck me...'' She say shyly with a pount on her face ''Thats right'' he made himself comfortable in the couch and open his arms ''Come where princess big brother kuna will help you up, cause your boyfriend is a less of man asshole that can't make a woman fell right'' He said with a big smile on his face Megumi just sat over his thigh and hide her face on the curve of his neck, she felt how her blood dirted kuna's bare thigh, he put his hand over her ass and she start humpping his leg ''Thats right bsby make yourself feel good, use ''

Chapter 1: Blood on His Thigh

The fluorescent bulb flickered, buzzing like a trapped insect. It cast a sickly yellow glow over the peeling wallpaper and the sagging couch, its springs groaning in protest under their weight. The air was thick with the smell of stale sweat, old incense, and something faintly metallic.

Megumi shifted on his lap, a small, pained sound escaping her lips. The rough denim of his jeans was abrasive against her bare skin. Her short, dark blue hair was damp at the temples, sticking to her skin.

“It aches,” she whispered, her voice thready. Her soft blue eyes were pleading, glassy with unshed tears. She was so small against him, her delicate frame almost disappearing into his larger one. “Sukuna. It really aches.”

Sukuna didn’t move, his body a languid sprawl against the worn cushions. His sharp red eyes watched her from beneath messy pink hair, his expression one of bored amusement. The tattoos that crawled over his arms and torso seemed to shift in the uneven light.

“You’re making a mess,” he said, his voice a low rumble. He didn’t sound upset.

She glanced down. The blood from her ruined panties had seeped through the thin fabric, leaving a dark, wet smear on his thigh. The sight of it, of her mark on him, made a confusing heat coil in her stomach, momentarily overpowering the dull throb between her legs.

“Sorry,” she murmured, but she didn’t stop moving. Her hips made another slow, grinding circle against the hard muscle of his leg, seeking pressure, seeking relief. The friction was a blunt agony that skirted the edge of something else. She whimpered.

“He wouldn’t touch you like this, would he?” Sukuna’s hand came up, not to comfort, but to grip the back of her thigh, his fingers digging in. He guided her movement, increasing the pace. “Your little boyfriend. Too clean. Too scared of getting dirty.”

Megumi’s breath hitched. She leaned forward, her forehead dropping to his shoulder. The cotton of his tank top was soft against her skin. She could feel the powerful shift of his muscles underneath. “He… he says it’s gross. During this time.”

Sukuna let out a short, derisive laugh. The sound vibrated through her. “It is gross.” His other hand settled on her ass, squeezing possessively. “So use me instead. Since you need it so bad. Since you can’t go a few days without being filled up.”

His words were crude, meant to demean, but they lit a fuse in her core. He was the only one who ever talked to her like this. The only one who saw the raw, ugly need in her and didn’t look away in polite disgust. He leaned closer, his lips near her ear. His breath was warm. “Go on. Grind on my leg like a bitch in heat. Get your pretty little blood all over me.”

A sob caught in her throat, equal parts shame and devastating arousal. She obeyed, her movements becoming less pained and more purposeful, driven by a deep, familiar hunger. The sharp ache began to blur, transforming into a building pressure. Her fingers clawed at his shoulders.

“There you go,” he mocked, but his grip tightened, holding her steady for his thigh. His own breathing had deepened slightly. “Pathetic. Can’t even take care of yourself.”

“I need—” she choked out.

“You need me,” he finished for her, his voice leaving no room for argument. It was a statement of fact. “Always have. Always will.”

The flickering light seemed to stutter in time with her movements. The world narrowed to the creak of the couch springs, the wet sound of her against his jeans, the oppressive heat of the room and his body. The metallic scent was stronger now, mixed with her own salt and his distinctive, musky smell. It was suffocating. It was the only thing that felt real.

Her whimpers grew sharper, climbing in pitch. The culmination was sudden, a violent, shuddering release that ripped through her small frame, leaving her boneless and gasping against his chest. The pain was still there, a dull background hum, but it was distant now, buried under the wave of numb satisfaction.

For a long moment, there was only the sound of their ragged breathing. Sukuna’s hand smoothed over her back, a gesture that could almost be mistaken for tenderness.

Then he shifted.

In one effortless motion, he stood up, lifting her with him as if she weighed nothing. Her legs dangled limply. He carried her past the littered coffee table, kicking a stray beer can out of the way. It clattered against the wall.

“Sukuna?” Her voice was slurred with exhaustion.

He didn’t answer. He pushed open the door to the bathroom with his foot. The smaller space was even hotter, the air damp. He set her down on the edge of the cracked sink, her blood-streaked thighs splayed. He turned on the tap, testing the water with his fingers.

The silence stretched, tense and full. He grabbed a washcloth from the rack, ran it under the warm water, and without a word, began to clean the mess from her inner thighs. His touch was impersonal, efficient. Clinical, almost.

Megumi watched his face, searching for something. Anything. His red eyes were focused on the task, his mouth a flat, unforgiving line.

“He’s taking you to some party tomorrow night,” Sukuna stated, not looking up. He wasn’t asking.

She nodded, a tiny movement. “Yes.”

He rinsed the cloth, the water in the basin blooming pink. He wrung it out. His movements were deliberate, controlled. Finally, he tossed the cloth into the sink and placed his hands on either side of her, caging her in. He leaned in close, until his face was all she could see.

“You come home smelling like anyone else,” he said, his voice barely above a whisper, yet it filled the tiny room, “and I’ll remind you who you belong to. In a way you won’t forget for a week.”

He pushed off from the sink and walked out, leaving the bathroom door wide open. Leaving her sitting there, cold and exposed, the damp cloth cooling rapidly in the bowl.

From the other room, she heard the crack of a beer can opening. The flickering light from the living room bulb bled into the bathroom, casting long, dancing shadows on the tiles.

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