Jaiko had always been a good girl, but in the dark between breaths, she realized she liked the bad things best. Nobita's hands were rough on her, squeezing her chest until she arched, a soft "Ahhn~" escaping before she could bite it back. He caught the sound and twisted her nipple viciously between his fingers, sharp and cruel.
"Fuckin' slut, moaning already?" he hissed, pinching harder until tears pricked her eyes. "You love this shit, don't you? Pretending you're all pure while your pussy's dripping for me."
She wanted to say no. She wanted to say yes. Instead she shivered, knees pressed together as if that could hide the sticky heat gathering below. Nobita didn't wait. His palm slid under her shirt, fingers splayed, and her skin prickled. When she whined—"Nngh!"—barely a noise, he pulled her close, breath hot and sour against her ear.
"Shut the fuck up," he growled, pinching both nipples now, rolling them brutally between his thumbs and forefingers. "Or I'll make you scream loud enough for the whole neighborhood to hear what a whore you are."
Jaiko's cheeks burned crimson, her body betraying her with every twist. Nobita shoved her back so she was almost sitting, skirt rucked up, thighs exposed to the cold air. His knee forced them apart roughly, and she froze, staring at the ceiling cracks to avoid his greedy, mean gaze.
His fingers trailed down her stomach, teasing, then yanked her panties aside. She breathed in sharp gasps—"Hah… hah…"—but her hips bucked involuntarily. "See?" he sneered, voice low and dark. "Filthy little cunt wants it bad."
He wasn't asking. He plunged two fingers inside her slick heat, curling them roughly. Jaiko jerked, biting her hand to muffle a loud "Mmmph—ahh!" Nobita laughed cruelly. "Slut," he spat, pumping faster, thumb grinding her clit. "Look at you clenching like a desperate bitch. Bet you've been fingering yourself thinking about this."
She writhed, desperate, too proud to beg, moans slipping out despite herself—"Ahhn~… nngh… please…"
Nobita leaned in, lips grazing her ear. "If you want me to stop, say it, whore."
She stayed silent. He rewarded her with a sharp slap to her tit, then another pinch that made her cry out—"Aah!"
He pulled his fingers free, slick and shining, and fumbled with his pants. His cock sprang out, hard and leaking. He stroked it once, smirking at her wide eyes.
Jaiko's breath hitched. As he notched the head against her entrance, rubbing teasingly, panic finally surged.
"No—wait, Nobita, I… I can't—stop!" She pushed at his chest weakly, legs trying to close. "Please, not like this—"
His hand cracked across her face—hard, stinging slap that snapped her head to the side. Her cheek bloomed red instantly.
"Shut your fucking mouth, you dumb cunt!" he snarled, grabbing her jaw roughly, forcing her to look at him. "You don't get to say no after squirting on my fingers like a cheap whore. You begged for this the second you let me touch you. Now spread those legs or I'll make it hurt worse."
Tears welled in her eyes, but her body trembled with shameful heat. She didn't fight anymore.
Nobita thrust in hard, burying himself to the hilt in one brutal stroke. Jaiko's back arched, a broken "AHHN!" tearing from her throat as he stretched her painfully full.
"Fuck— so tight," he groaned, starting to pound immediately, hips slamming. "Take it, bitch. Take every inch like the slut you are—ngh!"
Each thrust punched moans out of her—"Ahh! Nngh! Ahhn~!"—her nails digging into his arms. He pinched her nipples again, twisting as he fucked her harder. "Scream for me, Jaiko. Let 'em hear what a dirty girl you turned out to be."
Downstairs, Gian paused mid-bite of his snack, head tilting. A muffled thump and a high-pitched cry filtered through the floorboards.
"Oi, Suneo—did you hear that? Sounded like… someone getting hurt or somethin'."
Suneo froze for half a second, then forced a casual laugh, shoving chips into his mouth to hide the tremor in his voice. "Nah, man, it's just the wind rattling the windows. Old house, y'know? Creaks and shit all the time."
Gian frowned, listening harder. Another faint "Ahhn~" drifted down, followed by rhythmic thuds.
"Wind, huh?" Gian muttered, suspicious.
"Yeah, totally," Suneo said quickly, slapping Gian's shoulder. "C'mon, focus on the game. You gonna let me win this round or what? Don't be a sore loser."
Gian grumbled but turned back to the screen, distracted just enough. Upstairs, Nobita grinned wider, hearing the faint voices below—he fucked Jaiko even harder, hand clamping over her mouth to muffle the next loud moan.
"Quiet, whore," he whispered, hips snapping. "Wouldn't want big brother finding out his little sister's getting railed like a toy… unless you want me to call him up here to watch."
Jaiko's eyes widened in terror and twisted arousal, her walls clenching around him at the threat. Nobita cursed under his breath—"Fuck, you like that idea, don't you? Dirty fucking slut"—and drove deeper, chasing his release while her muffled cries vibrated against his palm.
She was ruined, marked, and—deep down—craving every brutal second.