It started as heat in the joints—wrists, hips, the knobs of his spine pressing into the floor. Naruto had been sitting against the transparent wall for what felt like hours, knees drawn to his chest, trying to convince himself he was only tired. That the flush crawling up his throat was from the recycled air, the artificial light, the stress. His body didn't argue back. It just quietly continued doing what it was going to do regardless of what he told himself.
This was only the beginning. His body would soon betray him completely, and he'd be left with nothing but raw need. Last time, Sasuke had been there—his scent, his touch, his voice cutting through the haze. Before that, only once: at sixteen, when Iruka and Kakashi had recognized the signs and administered medication before the worst hit. But Orochimaru had promised no such mercy this time. No pills to dull the fire. No Sasuke to soothe it. Just Naruto alone with his body's demands, demands he wasn't sure he could survive.
Somehow he ended up on the floor. His hospital gown rode up his thighs, the thin fabric a torment against his hypersensitive skin. He tried to smooth it down but the brush of his own fingertips sent electricity racing up his legs. A whimper escaped him. The air itself felt heavy with possibility, each breath carrying phantom scents—Sasuke's cologne, the salt of his skin after sex. Even as he cursed himself for these thoughts, his body arched slightly, seeking contact with nothing but empty air.
He was sweating. Not the honest sweat of a hard run, but something that came from inside his bones, slow and continuous, soaking through the gown until the fabric clung to his thighs in a way that made him shiver. He could smell himself, which was the worst part—sharp and sweet and embarrassingly unmistakable, the pheromones he'd kept locked away for years blooming in the small, sealed space with nowhere to go. The recycled air circulated it back to him. Again. And again.
He braced his palms against the cold tiles and hauled himself up, his body demanding motion like a scream beneath his skin. The tiles felt good against his hands. Too good. He imagined pressing his whole body against their coolness.
He paced. Four steps to the far wall, four steps back. One-two-three-four, turn. One-two—Sasuke's hands would be cool like these tiles—three-four, turn. He'd counted the floor tiles already—thirty-two in total, thirty-two places Sasuke could press him down—no, focus—laid in antiseptic white that reflected the fluorescent light. He tried to concentrate on the grout lines, but they blurred as his pulse throbbed in his neck, right where the collar rubbed when he swallowed.
It didn't work.
He pressed his forehead against the concrete wall opposite the door, the smooth surface cool against his burning skin. His thoughts scattered like startled birds—wall, cool, relief—before circling back to the same relentless image: Sasuke's hands sliding down his back. Naruto banged his head against the wall, not enough to hurt but enough to jar the fantasy loose. For three seconds, his mind cleared. Then it flooded again: fingertips tracing his spine, a mouth at his neck, the weight of a body pressing him against this very wall. He whimpered, hating the sound even as it escaped him.
Naruto's neck prickled with awareness and he glanced over his shoulder to find Kurama's eyes on him. His brother's face was a mask of concern, but all Naruto could feel was naked exposure, as if his skin had been peeled away. His stomach twisted into a knot so tight it threatened to snap. This was Kurama—his hero, his protector—watching him dissolve into this... this thing he'd spent years proving he wasn't. A cold sweat broke out across his forehead that had nothing to do with his heat. He'd rather have been strapped to a table under Orochimaru's knife than trapped in this transparent box with his brother witnessing every tremor, every whimper, every moment of his unraveling.
He felt his face go scarlet. He fixed his gaze at the floor and kept it there.
It was Kurama who finally spoke.
"Hey." His voice was low. Stripped of the raw panic it had held earlier, it landed like a careful hand on the shoulder. Naruto didn't look up.
"Naruto."
"I'm fine," Naruto said. He was aware, distantly, that this was a transparent lie in a transparent cell, and some small, bleak part of him almost laughed.
Kurama was quiet for a moment. When he spoke again, his voice was measured, the way it got when he was choosing each word with deliberate care. "You're not fine. And it's okay that you're not fine." A pause. "You know what you need to do."
Naruto's jaw clenched so hard his teeth ached. "Don't."
"I'm not going to make it weird. I'm your brother." Kurama exhaled through his nose, the sound carrying clearly in the silence between them. "You're going to make yourself sicker holding it in. This isn't—it's not something to be ashamed of. Not here. Not with me."
Naruto finally looked across the hallway. Kurama was at the barrier on his side, arms hanging loose at his sides, amber eyes direct and unblinking. There was nothing in his expression that looked like pity or disgust or the particular expression Naruto had always feared most—the one that said , you were never as strong as you pretended. There was just the exhausted, careful face of someone who had been watching his little brother suffer and couldn't stand it anymore.
Naruto peeled his eyes away, gaze sliding down the hallway where other cells blurred at the edges of his vision. His attention caught the white camera in the ceiling corner—the camera—and his stomach twisted. "It isn't just us," he managed, voice cracking as another wave of heat pulsed through his lower abdomen. He shifted his weight, the friction of the thin gown against his skin sending an unwanted spark of pleasure up his spine. "There's a camera and—" His thoughts scattered like mercury as sweat beaded at his hairline. "—everyone can hear." A sob escaped him as he pressed his thighs together, desperately trying to ignore how the damp fabric clung to his skin, darkening visibly between his legs.
Kurama's eyes softened. "I will turn around," he said simply, then added with deliberate casualness, "You know what? I never told you about the time Lee wouldn't shut up about his workout playlist." He held Naruto's gaze for another beat—a look that said, I've got you—then turned to face the back wall of his cell. His shoulders squared as he raised his voice. "Hey, Lee! Start singing that ridiculous song you love! The one about youth and passion!"
From down the hall came Lee's enthusiastic voice: "I thought you'd never ask!" A chorus of groans followed as Lee launched into song. "Work it, make it, Do it, makes us—" Several other voices reluctantly joined in, deliberately off-key. Naruto's lips twitched into a brief smile despite himself. He'd never heard a worse rendition of "Harder, Better, Faster, Stronger" in his life. The moment of distraction ended as another bead of sweat traced a slow path down his neck.
Naruto stared at the straight line of his brother's back—gaunt through the hospital gown, shoulder blades too prominent, the metal of his own collar catching the fluorescent light. He had not seen Kurama's back for years, he realized. The last time they'd been in the same room like this, Kurama had been showing him how to throw a proper jab, standing behind him with one hand on his shoulder correcting his form.
Naruto's throat closed.
Fingers numb and clumsy, he grabbed at the cot's blanket.
It hardly deserved the name—just a sheet of institutional fabric that reeked of bleach with undertones of whoever had suffered here before him. Still, he dragged it over his shoulders and shuffled to the furthest corner, turning his back on everything: the hallway, his brother, the black eye of the camera that watched from above. That last one he couldn't escape, but he could pretend.
He folded himself down against the cold floor, knees pulled tight to his chest, the pathetic shield of cotton draped over him like a child's fort. His forehead pressed against his kneecaps as he fought to control his breathing. Lee's song continued somewhere beyond his hiding place, but the sound barely registered beneath the thundering pulse that consumed his senses.
His hand found his mouth first.
Then he surrendered, letting his hand slide down to grasp his aching cock, already slick with pre-come. His fingers tightened instinctively, drawing a gasp from his throat that he muffled against his knee. His other hand drifted lower, fingertips grazing the sensitive rim where he was embarrassingly wet. He hesitated, then forced himself to choose—too obvious otherwise. Behind his closed eyes, Sasuke materialized with perfect clarity: teeth scraping his throat, strong hands pinning his wrists above his head, the delicious weight of him pressing Naruto open, filling him so completely that the emptiness inside him now felt like a physical wound.
The ghost of Sasuke's touch burned across his skin—phantom fingers tracing his collarbone, the hollow of his throat, the sensitive spot just below his navel that always made him arch. Naruto bit his lip until he tasted copper, his hand moving faster as he remembered the weight of Sasuke's body pressing him into the mattress, the way Sasuke would whisper his name against his ear like a secret. The emptiness beside him felt vast, a physical ache that spread from his chest to his fingertips even as his body chased release.
The memory of Sasuke's voice ghosted against his ear—"You are mine"—and Naruto's body arched involuntarily, chasing the phantom pressure of a body that wasn't there. His fingers tightened, thumb grazing the sensitive spot that only Sasuke knew to touch. Behind his eyelids, he could almost see those dark eyes watching him come undone, could almost feel those pale fingers replacing his own. The emptiness ached like a wound as pleasure coiled tight at the base of his spine, then shattered through him. He bit down hard on the blanket as he came, muffling the name that threatened to escape.
As the heat cleared for one miserable moment, the absence felt like a wound torn open. His chest caved in, hollow where Sasuke should be. A sob ripped from somewhere deeper than his lungs, and tears spilled hot down his face. His fingers reached instinctively for a phantom touch—for dark eyes that saw him, really saw him—for the scent of rain and smoke that meant safety. His body knew what was missing before his mind could name it. Not just an Alpha. Not just release. Sasuke. The other half of himself, separated by walls and miles and enemies, leaving him incomplete, a broken circuit still desperately trying to connect.
Then it came back, and he gasped as the haze of arousal flooded through him—a mercy, almost, drowning out the raw wound of Sasuke's absence that had torn through his chest moments before.
But the relief lasted seconds before transforming into something worse—not the generalized flush of before but a targeted, vicious pull that twisted low in his belly like fingers reaching inside him. His body rejected what he'd offered it, the emptiness crying out for something his own touch couldn't provide. Tears stung his eyes as the heat surged back, stronger for having tasted what it truly wanted. The hollow ache in his chest tangled with the desperate need below, until he couldn't tell where longing ended and desire began—both screaming for the same person, the same hands, the same scent that wasn't here. His fingers dug into his own skin, searching for an anchor as the two hungers tore him apart from within.
His vision blurred at the edges, the room dissolving into smears of light and shadow. Words fractured in his mind—not sentences but fragments: Sasuke's hands. The weight pressing him into mattress. That spot where neck meets shoulder. The scent that made his knees weak. Rational thought crumbled beneath the tide of his body's demands. Even his own name felt distant, replaced by a single imperative that throbbed with each heartbeat: Alpha. Need. Now. His fingers clawed at nothing, searching for skin that wasn't there.
Naruto pressed his fist against his sternum and breathed, each exhale a whimper he couldn't suppress. His body betrayed him with every pulse—slick gathering between his thighs, skin hypersensitive where the rough fabric of his clothes dragged across it. "No, no, no," he whispered, teeth chattering despite the fever burning through him. He pressed his spine against the cold corner wall and pulled his knees tighter, but his hips bucked involuntarily, seeking friction that wasn't there. His pupils dilated as another wave hit, stronger than before, leaving him gasping and clawing at the concrete floor. The emptiness inside him yawned wider, hungrier.
A sudden bang against the door jolted through his consciousness, momentarily cutting through the fog of his heat.
The door's reinforced glass rattled in its frame. Naruto flinched upright, heart in his throat, every muscle raw and exposed. Through the smeared pane, a face pressed forward—narrow, hungry eyes and a sneer of yellowed teeth. The guard he'd seen before, the one with the overdeveloped biceps and the buzzcut that made his ears stick out like radar dishes. Zaku. He was licking his lips, slow and deliberate, gaze fixed on the bare skin where Naruto's gown had bunched up around his hips. Naruto scrambled to yank the fabric down, scooting backwards until he hit the wall, knees up as a last, pathetic barrier.
Zaku grinned wider, tapping a finger against the glass. "You ready to beg yet?" His voice was thick, the vowels stretched with something that might have been amusement if it wasn't so ugly. "I can smell you from out here, Omega. You sure you're not dying for it?"
Naruto's mouth tasted like acid. He bared his teeth, wishing the snarl could reach through the barrier and rip out Zaku's throat. "In your fucking dreams," he spat, swallowing the tremor that threatened to break his voice. "Why don't you go jerk off to the cameras like the rest of the perverts?"
Zaku just laughed, a short, barking sound. "You say that now. Give it another hour." He leaned in, nose almost squashed to the glass. "You'll be screaming for an Alpha soon enough." His tongue flicked over his cracked lips. "I will be ready. Open invitation."
A pulse of heat surged up Naruto's neck, but this was a different kind, spiked with adrenaline and hatred. He braced his hands against the floor and forced himself to stare Zaku down. The guard's eyes rolled, and he started to walk away, then stopped and—Naruto gagged—a wave of Alpha pheromones rolled through the gap at the bottom of the door, thick and cloying, making the air electric. His body responded instinctively, every nerve ending lighting up in revolted recognition. But mentally, he shoved it back. Not his Alpha. Not ever.
He spat on the floor, lips curling in disgust. "You smell like wet dog and cheap soap. Try harder."
Zaku's eyes narrowed, and for a second Naruto thought the guard might break protocol and come in anyway, just to wipe the look off his face. Instead, Zaku shook his head, sneering. "Won't be long now. I'll check on you soon, princess." With a last, lingering look, he turned and clomped away, boots echoing down the corridor.
The echo stretched on for a long time, until Naruto realized the singing had stopped. He blinked, fighting a haze of heat and humiliation, and scanned the hallway—not just his brother's cell, but all the others. The silence was complete; even Lee had gone quiet. Only the hum of the lights and the faint, ever-present hiss of the ventilation system. He wondered if they were all listening—if the whole wing was waiting to see if he'd break.
He hadn't broken. Not yet.
Naruto let his head fall back against the wall and stared at the ceiling, jaw clenched so hard his molars ached. The heat hadn't receded—it never receded, not really, just pulled back like a wave gathering itself before the next surge—but the spike of adrenaline from Zaku's visit had bought him something. A few seconds of cold clarity, the part of his brain that still belonged to him asserting itself over the animal noise beneath.
"Naruto."
Kurama's voice. Still facing the back wall of his own cell, shoulders rigid, spine very straight. The posture of a man doing the hardest thing he knew how to do, which was nothing.
Naruto dragged air in through his nose and let it out through his mouth. "Still here," he said. His voice came out wrecked. He didn't try to fix it.
Kurama's shoulders dropped a fraction, the only sign he'd been holding himself against something. "I know."