Based on what Sasaki had told her, Sayuri pieced together her diagnosis. There was nothing physically wrong with him. His inability to respond to the girl he supposedly liked — that wasn't dysfunction. It was displacement.
She replayed the incident in her mind. The hallway floor, still slick with moisture. Her body crashing down, the towel unraveling from her torso like a ribbon pulled from a spool, leaving her bare against the cold tile. Sasaki lunging to catch her and falling with her instead, the full weight of his chest pressing into her naked skin, his face inches from hers, his hips flush against her thighs with nothing between them but the thin fabric of his shorts.
He'd never touched a woman's bare body before that moment.
And hers wasn't the body of some wispy girl from a Bunny Girl Senpai daydream. Sayuri knew what she looked like — the heavy curve of her breasts, the cinch of her waist flaring into full hips, skin that held warmth like sun-baked porcelain. For a virgin, that kind of full-contact exposure was a sledgehammer to the psyche. It would've seared itself into his brain the way a camera flash burns an afterimage behind closed eyelids.
He's fixated on me, she realized, and the thought sent a bloom of heat crawling up from her collarbone to the roots of her hair. That accidental contact imprinted on him so deeply that it's overriding everything else — even the girl he's been crushing on. He just hasn't figured it out yet.
The implications made her stomach tighten. If she was right, then Sasaki's "condition" was her fault. And if it was her fault, she needed to fix it. Talk him through it, rationalize it, untangle the wires his adolescent brain had crossed. But she couldn't do any of that without confirming the theory first.
The logic was clinical, clean: yesterday, with his crush, he couldn't get hard. If touching her body produced a response right now, that was confirmation. Simple as a control variable in an experiment.
I'm helping him, Sayuri told herself, jaw set. That's all this is.
She'd already told him he could touch her freely. The words had left her mouth before her pulse had time to catch up, and now her eyes were shut tight, lashes trembling against her cheeks, because if she looked at him while he did this she would absolutely lose her composure. Her fingers gripped the hem of her oversized Spy x Family sleep shirt, knuckles white.
She'd only ever been this close with one person in her life — and that had been an accident. This was deliberate. Voluntary. The distinction made her heart slam against her ribs like something caged.
This is just a test. A medical test. Nothing more.
A thread of excitement wound itself through the anxiety anyway, uninvited.
"S-Sayuri-nee… you're really…" Sasaki's voice came out fractured, stammering, the portrait of a boy too overwhelmed to form complete sentences.
She kept her eyes sealed. "This is purely to determine whether you have a genuine condition," she said, her tone clipped, authoritative — a librarian issuing late fees. "Don't overthink it. Just like last time — think of it as acting out a scene with your onee-san. That's all."
And I need to acclimate to this, she added silently. If Sasaki and I can't handle casual proximity, Tanaka will notice something is off eventually.
Sasaki let the silence stretch for a calculated beat. Then, sheepish, soft: "…Forgive me, Sayuri-nee."
His palm — already resting against the swell of her left breast from the prior "test" — began to move.
---
Got her.
Behind the mask of nervous hesitation, Sasaki's lips curved into a grin he was glad she couldn't see. His fingers closed around the yielding shape of her breast through the thin cotton of her sleep shirt, kneading slowly, experimentally, feeling the weight of it shift and compress under his grip. No bra underneath. Just the shirt's fabric and then her — impossibly soft, warm even through the cloth, heavy enough to fill his entire hand and then some.
Sayuri's breath hitched. A small, involuntary sound, barely more than a catch at the back of her throat — hhn — followed by a slow, controlled exhale through her nose that came out far too loud in the quiet room. The flush that had already tinted her cheeks deepened, spreading down her neck, painting the visible strip of skin above her collar in blotchy rose.
She stood rigid, arms at her sides, chin tilted slightly upward. Every muscle in her body was fighting to project indifference. Her lips pressed together in a firm line.
"Well?" she asked, voice admirably steady. "Any response?"
"I think… maybe a little," Sasaki said. He paused, then let his voice spike with sudden urgency: "Sayuri-nee — can I use both hands? I think it's starting to work. If I use both hands I'm sure — I'm sure I'll feel something."
Sayuri's brow creased. Both hands. On her chest. The request was — god, it was so brazen, but the desperation in his voice was unmistakable, and she understood what this meant to him. A man's pride. His entire sense of self-worth wrapped up in whether or not his body could perform the most basic biological function.
He's really that scared, she thought, and the sympathy softened whatever protest was forming.
She hesitated for one full breath. Then nodded, a single quick dip of her chin.
Sasaki didn't need to be told twice. His left hand rose to claim her right breast, and now he held both of them, one in each palm, fingers sinking into the pliant flesh through her shirt. He squeezed, released, squeezed again — rolling the soft tissue in slow circles, thumbs tracing idle arcs across where her nipples would be. The cotton was thin enough that he could feel the stiffening peaks beneath it, two firm little points pressing back against his thumbs like they were trying to meet him halfway.
Like kneading fresh mochi, Sasaki thought, almost giddy. Fuck, even through the shirt they feel incredible — dense and pillowy at the same time, the kind of weight you want to just bury your face in and —
"Nnnh—" Sayuri's composure cracked. A breathy moan slipped through her pressed lips, barely louder than a whisper, and her shoulders drew inward reflexively. Her breathing roughened, each inhale catching slightly, each exhale trembling on the way out. The blush had conquered her face entirely now — a deep, feverish crimson that reached the tips of her ears.
She was trying so hard to look unbothered. The effort itself was intoxicating.
"Sayuri-nee!" Sasaki injected a burst of elation into his voice, the sound of a man receiving a divine revelation. "I felt something — I'm responding! It's working!"
In his excitement, both hands clamped down hard — fingers digging deep into the yielding flesh, squeezing with a force that had nothing to do with medical testing.
"Ahh—!" Sayuri gasped, spine arching involuntarily, a sharp hiss of pain whistling between her teeth. Her breasts throbbed under the sudden pressure, the sensitive tissue protesting the rough treatment — but as the initial sting faded, something else flooded in behind it. A warm, pulsing ache that radiated outward from where his fingers gripped, spreading through her chest and pooling somewhere low and molten in her belly.
That hurt. That definitely hurt. So why does it also feel —
She bit the inside of her cheek and said nothing.
Then Sasaki's voice shifted. The elation collapsed into panic, sharp and ragged: "Wait — it's fading. It was there for a second but now — why isn't it — why can't I —"
Sayuri's eyes flew open on instinct before she caught herself and squeezed them shut again. "Don't panic," she said quickly, breathlessly, her composure held together with spit and willpower. "Just — give it a moment, Sasaki. Be patient."
"It's not enough stimulation." His voice came through clenched teeth, low and fierce, like a man bargaining with fate. "Sayuri-nee. Can I… put my hands under your shirt? Directly on your skin?"
"Wha—"
The sound that left her was closer to a yelp than a word. Her eyes snapped open — met his — and for a fraction of a second she saw something in his expression that didn't quite match the desperation in his voice. But the moment passed too quickly to examine, and the rawness of his request swallowed every other thought.
He wouldn't ask something like that unless he was truly desperate. He's never been disrespectful to me — not once. He must be terrified.
Her chest heaved. The place between her thighs felt warm and swollen in a way she refused to name. She'd already come this far. Stopping now would mean all of this had been for nothing — the embarrassment, the sacrifice, the lines she'd already let him cross.
Commit. Finish what you started.
"…Fine." The word came out thin, stripped of everything but resignation and something dangerously close to want. "Go ahead, Sasaki."
His hands withdrew from the outside of her shirt. A pause — two heartbeats long — and then his fingers hooked into the loose collar of her sleep shirt and slid downward, past her collarbones, past the hollow of her throat, and in.
The first contact of bare skin on bare skin made her entire body seize.
His palms were hot. Hotter than she expected — radiating a dry, almost feverish warmth that pressed flush against the cool, soft weight of her bare breasts. His fingers spread wide, encompassing as much surface area as possible, and then he squeezed, and the sensation was so direct, so unfiltered, so devastatingly different from the muted touch through fabric that Sayuri's knees buckled.
"Aahhn — hahh—" The moan tore out of her throat before she could swallow it. Not a polite sound. Not a dignified sound. A raw, wet, involuntary vocalization that resonated somewhere between surprise and pleasure, her head tipping back, the tendons in her neck standing taut. The smell of her — vanilla lotion and clean sweat and something muskier underneath, something warm and intimate and alive — rose between them like steam.
Sasaki's hands moved with more confidence now. He palmed her breasts in alternating circles, rolling the heavy flesh against her ribcage, letting his fingers sink deep into the yielding tissue before dragging upward, gathering each breast toward its peak. His thumbs found her nipples — swollen, stiff, almost painfully erect — and he pinched. Not gently. A firm, deliberate compression between thumb and forefinger, rolling the hardened bud like a bead, tugging it slightly away from her body before releasing.
"Nnaaah — hah — ah—" Sayuri's whole frame shuddered. Electric jolts lanced from her nipples straight down through her core, sparking through her lower belly, making her inner thighs clench together involuntarily. Her knees wobbled. She gripped the edge of the kitchen counter behind her with one hand, knuckles bone-white.
I'm losing it, she thought wildly. I can't — this is supposed to be clinical — why does it feel so —
"It's working!" Sasaki's voice cracked with manufactured joy, even as his hands continued their assault — rougher now, greedier, palms grinding against her nipples while his fingers dug into the soft flesh surrounding them, reshaping her breasts with every pass. "Sayuri-nee, I can feel it — I'm definitely responding now!"
Good — that's good — mission accomplished, you can stop now —
But his hands didn't stop. And she didn't tell them to.
He varied his approach with instinctive creativity — cupping from underneath to feel their full weight, then pushing both breasts together and kneading them against each other, then spreading his fingers wide and raking them slowly across the entire surface, dragging over the swollen nipples with agonizing deliberation. Every third or fourth pass, he'd catch a nipple between two fingers and pinch again — harder each time, tugging and twisting just enough to send a fresh shockwave rolling through her.
Sayuri's body was trembling visibly now. Her legs had turned to water. Each exhale carried a sound — sometimes a whimper, sometimes a moan, sometimes just a shaking hahh that fogged in the air between them. Her face was a ruin of composure — eyes glassy and half-lidded, lips parted and glistening, the flush so deep it looked like fever.
And then her knees gave out completely.
She collapsed backward and downward in a graceless slump, dragging Sasaki with her — his hands still buried inside her shirt, still gripping her breasts — and they hit the floor together, her back against the cool hardwood, his body landing heavy and solid on top of hers.
"Mmph—!" "Ghh—!"
The impact drove the air from both of them simultaneously. Sasaki's chest pressed flat against her stomach, his face level with her collarbone, her breasts spilling soft and bare against his jaw where the shirt had ridden up from the fall. The weight of him pinned her hips to the floor. She could feel — god, she could feel — the rigid line of him pressing against her inner thigh through his shorts, thick and unmistakably hard, radiating heat like a brand.
He's — oh. He's definitely not impotent.
"Sayuri-nee —" Sasaki's voice had dropped an octave. Rough, strained, stripped of all performance. His breath came in ragged bursts against her exposed chest, each exhale warm and damp on her skin. "I can't — I can't hold back anymore. It hurts. I need —"
He shoved her shirt up to her collarbones in one rough motion, baring her breasts entirely — the full, heavy swell of them spreading slightly to either side under gravity, pink nipples swollen dark and glistening with his saliva. He buried his face between them with a groan that vibrated through her sternum, pressing his cheeks into the soft valley, turning his head side to side, nuzzling and grinding against the warm, yielding flesh like a man trying to drown in her.
Sayuri's eyes flew open. Wide. Bright. Her pupils were blown, and the expression on her face was not shock. Not anger. Not protest.
It was hunger.
She wrapped both arms around his head and pulled him deeper. Her fingers threaded through his dark hair, nails dragging lightly against his scalp, cradling him against her chest while her spine arched to press more of herself into his face. A long, unsteady moan — "Mmmhnn — aaahh—" — vibrated through her throat as her body bucked softly beneath him, hips rolling once, involuntarily, against the hard ridge still grinding into her thigh.
I shouldn't — we shouldn't — this was supposed to be —
— don't stop.
Sasaki registered every signal. The arms pulling him closer. The hips lifting. The way her thighs parted just slightly wider, accommodating his body between them rather than resisting it. His right hand left her breast and reached down — fumbling with his zipper, the metallic teeth parting with a quiet zzzzip — and he freed himself into the narrow space between their bodies. The relief of release made him groan into her chest, his cock springing thick and rigid against her bare stomach, the swollen head smearing a slick trail of pre-cum across her skin.
He found her right hand — limp at her side, fingers curled loosely — and guided it downward, pressing her palm against his shaft.
At the same time, he turned his head, found her left nipple with his mouth, and closed his lips around it. His teeth caught the swollen peak with careful, deliberate pressure — biting down just enough to dimple the sensitive flesh, then releasing, then biting again — while his tongue swirled flat and hot across the trapped bud. Between bites, muffled against her breast: "Ngh — Sayuri-nee, please — it aches — help me —"
Sayuri felt something hot press into her hand. Smooth, impossibly hard, pulsing with a heartbeat that wasn't hers. Her fingers twitched — and then closed around it on pure instinct, wrapping tight.
"Ffuck—" Sasaki hissed through his teeth, hips jerking involuntarily, his cock throbbing inside the sudden vise of her grip. She could feel every detail through her palm — the thick, veined shaft, rigid as iron beneath skin that was almost velvet-soft, the slight upward curve of it, the swollen ridge where the head flared wider than the shaft. Hot. So hot it almost burned.
Sayuri's expression went distant. Hazy. Her lips parted around a breath she couldn't quite release, and a dreamy, half-focused look settled over her features — lashes low, pupils swimming, the crimson blush so deep now it looked painted on. Her hand began to move. Slowly at first. A tentative slide up the length of him, her fingers adjusting their grip, learning the shape and girth by touch alone — then back down, her thumb inadvertently dragging across the slick head, smearing the bead of pre-cum that had gathered there.
"Hahh—" Sasaki groaned into her breast, his entire body tensing.
She found a rhythm. Steady, unhurried strokes from base to tip, her grip firm enough to create real friction, her wrist rotating slightly on each upstroke so her palm swept across the sensitive underside of the head. She wasn't looking. Her eyes were unfocused, fixed on a point somewhere past the ceiling, her lower lip caught between her teeth as her hand worked with a muscle memory that belonged to late nights and a marriage bed and a knowledge of men's bodies she'd never expected to use like this.
The living room smelled like chamomile and sweat and the sharp, briny musk of arousal — his and hers both, mingling in the warm air.
Sasaki's hips moved in counterpoint to her strokes, short involuntary thrusts that pushed his cock through the ring of her fingers. His mouth alternated between her breasts — sucking one nipple deep, letting it go with a wet pop, crossing to the other, dragging his tongue in broad strokes across the stiffened peak before pulling it between his teeth again. His groans grew tighter, higher, more urgent, the muscles of his abdomen clenching against her stomach with every thrust.
" Sayuri — nee — ngh — I'm —"
His cock swelled in her hand. She felt it — a sudden thickening, the shaft turning rigid as stone, the veins pulsing hard and fast against her palm. His balls drew up tight, pressing against the base of her curled fingers. His hips snapped forward one final time, burying himself in her grip to the root.
Then he came.
A sharp, guttural "GHH—" tore from his throat as his cock jerked violently in her fist — once, twice, three times — each spasm accompanied by a thick, ropey pulse of heat that shot across her bare stomach and the underside of her breasts. The cum was scalding, almost shockingly hot, landing in heavy streaks that clung to her skin and pooled in the shallow dip of her navel. His whole body shuddered on top of her, hips twitching through the aftershocks, cock still pulsing weakly in her loosening grip as the last of it drooled over her knuckles in a slow, viscous trail.
Sayuri lay beneath him, chest heaving, staring at the ceiling through half-closed eyes. Her hand remained where it was — wrapped loosely around his softening cock, fingers slick and warm, her wrist resting against her own cum-streaked stomach. The heat of it soaked into her skin. She could feel every pulse, every fading throb, every degree of temperature as the thick fluid began its slow cooling.
I just made him cum with my hand.
...I'm still holding it.
Her throat bobbed with a dry swallow.
Sasaki's breathing came in heavy, slowing waves against the damp skin between her breasts, his weight settling more fully onto her as his muscles went slack, one hand still cupping her right breast with absent, possessive familiarity — his thumb tracing slow circles around the nipple like he'd forgotten it was there, or like he'd decided it belonged to him now.
Sayuri's free hand drifted upward and settled against the back of his head, fingers threading gently through his sweat-dampened hair, and she held him there against her chest while the rain continued its patient, indifferent percussion against the glass.
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