Step-Sister's Forbidden Midnight Mirror Masturbation

Step-Sister's Forbidden Midnight Mirror Masturbation

The house was silent except for the low hum of the air conditioner. Mia padded barefoot down the hallway at 2:17 a.m., the oversized gray t-shirt she slept in barely covering the curve of her ass. She’d only meant to pee and splash water on her face. College had left her wired and restless; summer break felt like one long, humid tease. She pushed the bathroom door shut behind her, not bothering with the lock. Jake was probably dead asleep in his room across the hall.

She flipped on the light and froze.

The full-length mirror on the back of the door caught her completely. The thin cotton clung to her breasts, and her nipples were already stiff, two dark points pushing against the fabric like they were begging for attention. Lower down, a small, unmistakable wet spot darkened the crotch of her pale blue panties. She could see the outline of her pussy lips through the damp cotton.

Heat slammed into her cheeks. Shame. But beneath the shame something else uncoiled, hot and liquid, tightening low in her belly.

Mia stared at herself. Really stared. At the way her chest rose and fell. At how her thighs pressed together like they were trying to hide what was already happening between them. Her reflection looked like a stranger—flushed, wide-eyed, hungry.

She swallowed once.

Then she hooked her thumbs under the hem of the t-shirt and dragged it slowly upward.

The fabric scraped over her nipples and she gasped at the friction. Her breasts spilled free, full and heavy, nipples aching. She watched her own hands cup them, thumbs brushing the stiff peaks. A soft, broken sound left her throat. She pinched harder, rolling the sensitive buds until her knees trembled.

One hand kept torturing her tit while the other slid down her stomach, hooked into the waistband of her panties, and shoved them down her thighs. The soaked cotton clung for a second before dropping to her ankles. Her bare pussy glistened in the mirror light, lips puffy and slick, clit already peeking out from its hood like it couldn’t wait.

Mia’s breath hitched. She had never watched herself like this. Not really. Not with the lights on and her own eyes locked on every filthy detail.

She dragged two fingers through her folds and spread them, watching the clear strands of arousal stretch between her fingertips. The sight made her clit throb so hard she whimpered. She rubbed slow circles over the swollen bud, eyes flicking between her dripping cunt and the desperate expression on her own face. Mouth open. Eyes glassy. Cheeks burning crimson.

Her hips started to rock.

She needed more.

Mia dropped to her knees on the thick bathmat, thighs spreading wide until her knees touched the cool tile on either side. The mirror was only two feet away. She could see everything—every glistening pink fold, the tight pucker of her asshole, the way her inner thighs already shone with her own mess.

She shoved two fingers inside herself without warning. The wet, obscene sound echoed off the tiles. Her mouth fell open wider and she started fucking herself in long, deep strokes while her other hand attacked her clit. The dual sensations made her eyes roll back for a second before she forced them open again. She had to watch. Had to see her fingers disappear into that greedy hole, come out shiny and coated, plunge back in faster.

“Fuck…” she whispered to her reflection.

She added a third finger. The stretch burned so good. Her pussy made wet, sloppy noises with every thrust. She ground her clit in frantic little circles, hips jerking like she was riding an invisible cock. Her tits bounced with every movement. She looked like an animal—hair sticking to her sweaty neck, mouth slack, eyes wild and dark.

The pressure built fast, brutal. Her thighs started to shake. She could see her asshole clenching in time with the strokes, her juices dripping onto the mat in tiny splatters. The girl in the mirror looked ruined already, and that only made Mia fuck herself harder.

Her orgasm crashed into her without mercy.

She came with a strangled cry, hips snapping forward. Clear fluid squirted around her fingers, splattering the mirror in messy streaks. Her walls clamped down so hard she could barely keep thrusting, but she did—riding every violent spasm, milking herself through the longest, filthiest orgasm of her life. Her face in the reflection twisted in pure ecstasy, tongue sliding out to wet her lips as she kept coming and coming.

When the last brutal wave finally ebbed, Mia stayed on her knees, trembling, fingers still buried deep. Her chest heaved. The mirror was fogged in places from her panting. She slowly pulled her fingers free with a wet sound and lifted them to her mouth.

Their eyes—hers and her reflection’s—locked.

She slid her slick fingers between her lips and sucked them clean, tasting herself, salty-sweet and thick. She licked every drop, never breaking eye contact with the flushed, wicked girl staring back at her. When she finished, she let her hand drop and smiled, small and dirty.

Mia stood on shaky legs, pulled her panties up over her soaked, sensitive pussy, and tugged the t-shirt back down. She turned the light off, slipped out of the bathroom, and padded back to her room with that same secret smile still curving her lips.

She was already wondering how much louder she could make herself moan tomorrow night.

She never closed the bathroom door again.