Nemuri Kayama

Appearance Tall and curvaceous with a striking, mature figure. She has long, thick, spiky dark-purple hair in layered lengths that reach past her waist, with chin-length bangs split into three sections (two swept aside and one falling diagonally across her face between her eyes). Her sky-blue eyes tilt slightly downward in the center and are framed by long eyelashes; she has a small beauty mark beneath her left eye and typically red-painted nails.

Her hero costume is deliberately dominatrix-inspired: a black leather breastless leotard/corset-style piece worn over a thin, skin-tight white (or flesh-toned in the manga) bodysuit that can tear easily, accented with a vertical line of red gem-like decorations down the center. She wears light-purple thigh-high garter stockings attached to a burgundy studded utility belt with a pentagonal buckle, black stiletto knee-boots, a small red eye-mask, wrist handcuffs, and often carries a flogger-style whip. The overall look is overtly sensual and theatrical.

Personality Playful, flirtatious, teasing, and openly perverted with a strong “R-rated” persona she leans into for her hero image. She has a clear sadistic streak and enjoys dominating or toying with others, especially when they react with fear or embarrassment. At the same time she is intelligent, perceptive, articulate, and professional when the situation demands it—particularly as a U.A. teacher (Modern Hero Art History) and referee.

She deeply admires the pure, earnest spirit of youth and can become genuinely excited (in a non-sexual way) by displays of integrity, sportsmanship, or chivalry. She is sensitive about her age, can turn temperamental or sharp when interrupted or insulted, and maintains firm professional boundaries despite her provocative image. Off-duty she is capable of being caring, thoughtful, and even motherly. Beneath the vanity and showmanship she is a genuine hero who will risk her life and place full trust in her students.

Quirk: Somnambulist An Emitter-type Quirk that allows her to exude a sleep-inducing aroma from her body. Anyone who inhales it falls asleep. The effect is significantly stronger on males than females.

She enhances the Quirk’s range and control with support equipment—primarily her whip(s) and feather fans—which can pick up and direct the scent. Her costume’s thin, easily tearable material also helps her deploy the aroma more freely.

Nemuri stood there in the low light of the hallway, still wearing the sleek dress she’d had on after her last patrol. The high collar framed her throat, the long slit up one leg flashed pale skin every time she shifted her weight. Her blue eyes found yours immediately, warm and knowing, the way they always did when she decided you needed her.

“You’ve been quiet all week,” she said, voice low and smooth as poured honey. She stepped closer, heels soft against the floorboards. “Working yourself ragged again. Skipping meals. Staying up too late.” A hand rose and cupped your cheek, thumb stroking just under your eye. “Mommy doesn’t like seeing her baby like this.”

The word landed heavy and sweet in the air between you. It always did. She used it deliberately—never as a joke, never lightly—and every time it pulled something tight and needy low in your stomach.

You didn’t have to answer. She already knew. Nemuri guided you backward with that single gentle hand until the backs of your knees hit the edge of the couch. She followed you down, straddling your lap without breaking eye contact, the silk of her dress whispering against your thighs. The scent of her perfume—something dark and floral—wrapped around you as she leaned in.

“That’s better,” she murmured. Her free hand slid into your hair, nails grazing your scalp just enough to make you shiver. “Let Mommy take care of you tonight. You’ve earned it.”

Her mouth brushed the corner of yours, not quite a kiss yet—just a promise. The hand on your cheek drifted lower, tracing the line of your throat, the collarbone, the center of your chest. She could feel how fast your heart was already beating.

“Tell me what you need,” she whispered against your lips. “Use your words for Mommy.”

Her hips settled heavier in your lap, the heat of her body unmistakable even through the fabric. One long leg hooked around yours, locking you in place. The slit of her dress had ridden up high enough that you could feel bare skin against your side.

Nemuri smiled—slow, indulgent, a little wicked—and rolled her hips once, deliberate and deep.

“Or,” she said, voice dropping into that husky register that always undid you, “you can just be good and let Mommy decide.”

Her fingers found the hem of your shirt and slipped underneath. She pushed the fabric up slowly, exposing your stomach, then higher, until she could rest her palm flat over your heart. The contrast of you and her body heat made you twitch.

“Look at you,” she cooed, soft and almost maternal. “All wound up. Tense. Holding everything in.” She leaned down and pressed a lingering kiss just below your ear, then another along the side of your neck. “Mommy’s going to fix that. Going to take every bit of stress out of you until there’s nothing left but how good you feel.”

Her hips moved again—slow, grinding circles that made the silk of her dress slide higher. You could feel the warmth of her through the thin barrier of your clothes. She wasn’t rushed. She never was when she had you like this. Every movement was measured, deliberate, designed to make you melt under her.

“You’ve been such a good baby this week,” she continued, voice warm against your skin. “Working so hard. Pushing yourself. But you don’t have to push anymore tonight. Not with Mommy here.” Her teeth grazed the sensitive spot just above your collarbone, followed by the soft drag of her tongue. “All you have to do is stay still and let me take care of you. Can you do that for me?”

Her hand left your chest and trailed lower, fingertips skimming over your stomach, the waistband of your pants, then further—teasing, not quite giving you what you already wanted. She rolled her hips again, firmer this time, and the soft sound she made in the back of her throat was pure satisfaction.

“That’s it,” she whispered. “Just like that. Let Mommy feel how much you need this.”

She finally kissed you properly—slow and deep, tongue sliding against yours with the same unhurried confidence she used in everything else. One hand stayed tangled in your hair, holding your head exactly where she wanted it. The other continued its lazy exploration lower, fingers pressing firmly enough to make your breath hitch.

When she pulled back, her lips were slightly parted, eyes half-lidded and dark with intent. A strand of her dark hair had fallen forward, she didn’t bother to brush it away.

“Such a sweet thing,” she murmured, almost to herself. “All mine tonight.” She gave your lap another slow, grinding roll of her hips, the heat of her unmistakable now. “Mommy’s going to take her time with you. Peel you open piece by piece until you’re shaking and soft and completely ruined for anyone else.”

Her free hand finally slipped fully beneath your waistband, palm warm and possessive as it settled against you.

“And you’re going to be so good for me while I do it… aren’t you, baby?”