Chapter 1: Birthday Kiss
The lantern by the door flickered, throwing uneasy shadows across the worn floorboards. The smell of sandalwood was weak tonight, almost drowned out by the scent of rain soaking into the old wood of the porch outside. Kakashi leaned against the wall, one foot propped behind him, watching Fuu Jin struggle with the latch on the main door.
“It’s stuck again,” Fuu Jin said, his voice soft. He pushed a lock of black hair behind his ear, the movement tired.
“I’ll fix it tomorrow,” Kakashi said. He didn’t move from his spot. He’d been waiting.
Fuu Jin finally got the bolt to slide home and turned, a faint smile on his lips. “Long day? You’re quiet.”
“It’s my birthday.”
The smile softened, turning sympathetic. “Oh, Kakashi. I know. I made the stew you like. It’s keeping warm.”
“I don’t want stew.”
Something in his tone made Fuu Jin pause. The older man wiped his hands on his pants, a nervous habit. The flickering light carved the delicate lines of his face, making him look even younger, almost ethereal. Kakashi’s chest felt tight.
“What do you want, then?” Fuu Jin asked.
“You.”
The word hung in the space between them. Fuu Jin’s slightly slanted eyes widened just a fraction. He gave a small, uncertain laugh. “Don’t joke like that.”
“I’m not joking.” Kakashi pushed himself off the wall. He wasn’t wearing his flak vest, just a simple black shirt and pants. He felt both incredibly powerful and utterly exposed. “I’ve wanted you for years.”
“Kakashi… I was your father’s—”
“I know what you were.” Kakashi was in front of him now, crowding him back against the heavy door. Fuu Jin’s back met the wood with a soft thud. He could smell the clean, simple soap Fuu Jin used. “He’s gone. I’m here.”
Fuu Jin looked up at him, dark eyes searching the single visible grey one above the mask. He saw the loneliness there, the raw need Kakashi usually kept buried under cynicism and mission reports. His shoulders slumped, not in fear, but in a weary acceptance. He had always had a hard time saying no to this boy, this man, who needed so much.
“One kiss,” Fuu Jin whispered, the words a surrender. “Because you’re lonely. Because it’s your birthday.”
It was permission. It was a crack. Kakashi seized it.
His hand came up, fingers threading into the soft black hair at Fuu Jin’s nape. The other hand slapped against the door by his head, caging him. Kakashi didn’t hesitate. He hooked a finger under his own mask and pulled it down, letting it hang around his neck. He saw Fuu Jin’s breath catch—at his bare face, at the intensity of his expression. Then he crushed their mouths together.
It wasn’t gentle. It was claiming. Kakashi’s tongue licked across Fuu Jin’s lips, demanding entry, and with a shaky sigh, Fuu Jin gave it. The taste of him was like green tea and something uniquely, painfully sweet. Kakashi groaned, the sound vibrating deep in his chest. He kissed him deeper, swallowing the little gasps, learning the shape of his mouth with a desperate, focused hunger.
Fuu Jin’s hands came up, fluttering, then settled lightly on Kakashi’s hips. His initial stiffness was melting, dissolving under the relentless heat of the kiss. It had been so long since anyone had touched him like this, with this kind of wanting. A low, helpless sound escaped his throat.
Kakashi took it as encouragement. He ground his hips forward, letting Fuu Jin feel the hard, thick line of his erection straining against his pants. Fuu Jin flinched, but didn’t pull away. His fingers curled into the fabric of Kakashi’s shirt.
“Wait,” Fuu Jin breathed when Kakashi’s mouth moved to his jaw, his throat.
“No.” Kakashi bit the sensitive cord of his neck, not hard, but enough to make Fuu Jin jerk. “You said yes. You can’t take it back.”
He wasn’t sure that was how it worked, but he didn’t care. His rational mind had shut down, overwhelmed by the feel of Fuu Jin’s slim body under his hands. He slid his palm under the simple cotton yukata, finding the smooth, hot skin of Fuu Jin’s stomach. He was so soft. Everywhere.
“We shouldn’t,” Fuu Jin moaned, even as his head fell back against the door, giving Kakashi better access.
“Why? Because of him?” Kakashi mouthed at his collarbone, sucking a mark into the pristine white skin. “He’s dead. I’m alive. And I want you.” His hand slipped lower, past the waistband of Fuu Jin’s loose pants. He cupped him. Fuu Jin was already half-hard, his cock twitching at the touch. “See? You want me too.”
“You want me too.”
Kakashi kissed him again. This time it was deeper, more consuming, and Fuu Jin’s mind went hazy from the lack of air and the frantic wander of Kakashi’s hands, which were everywhere—gripping his hip, sliding up his ribcage, thumbing a nipple through the yukata. A torrent of wet, hot saliva was exchanged, the kiss so deep and messy Fuu Jin almost felt like he was being devoured, consumed by the younger man’s hunger.
He was dizzy, disoriented. Without him really noticing, Kakashi had moved them, shuffling them away from the front door while keeping their mouths locked. Fuu Jin’s back met a different wall, then air, then the familiar, slightly uneven floorboards of the main hallway. A door clicked open. It was only when Kakashi tumbled them both sideways onto the firm, familiar surface of his own bed that Fuu Jin’s surroundings snapped into focus.
“Kakashi—!” A sound of protest escaped his throat, thin and weak.
It was instantly blocked by Kakashi’s mouth. “Shh,” Kakashi soothed against his lips, his voice a low, rough vibration. “Just wanted us to be more comfortable. That’s all.” He kissed him again, deep and persuading, and Fuu Jin allowed himself to be soothed, the logic dissolving under the relentless distraction of Kakashi’s tongue.
Fuu Jin was on his back, the quilt beneath him. Kakashi hovered over him, a solid weight nestled between his parted legs. With things heating up again, Kakashi began undressing him. The sash of the yukata was undone, the fabric brushed aside. Fuu Jin thought distantly that this was fine, it was just skin, it was no big deal. He let him.
He didn’t notice the ninja-quick movement, the blur of speed. One second the soft cotton of his underwear was there, the next a cool draft hit him and he was completely bare, his yukata and underwear in a heap on the floor. He was naked, pressed tightly into the mattress, his skin hot and flushed everywhere.
Kakashi freed his own cock, the movement discreet, a mere shift of fabric. It was hard, flushed dark, already leaking a clear string of precum that gleamed in the low light. He rubbed the slick head against Fuu Jin’s hole, smearing the moisture, not entering, just pressing and circling.
“Ah—wait,” Fuu Jin gasped, the sensation shocking and electric. In the back of his mind, a fading voice insisted he had only allowed a single kiss. But everything felt so good, the friction against that untouched, sensitive ring of muscle was unlocking a deep, forgotten ache. He didn’t protest further when Kakashi ignored him and began pressing forward, the broad tip nudging insistently.
Kakashi struggled. He was big, and Fuu Jin was tight, unprepared. The pressure built from a nudge to a demanding, insistent force. A sharp, burning pain lanced through Fuu Jin as the head forced its way past the clenched resistance.
The pain cut through the haze, bringing a jolt of cold, clearheaded horror.
“Kakashi, stop—we shouldn’t—!” he gasped, his hands coming up to push weakly at the solid chest above him. “I’m too old for you, this is wrong, you need to—you need to pull it out!”
The head was inside, just past that initial ring, stretching him unbearably. Kakashi stilled, his visible eye dark with a storm of frustration and want. “No,” he said, the word flat and final.
In protest, in a surge of raw impatience, he snapped his hips forward violently.
Fuu Jin cried out, a torn, ragged sound as Kakashi forced his entire length inside with one brutal, splitting thrust. The pain was white-hot and overwhelming, stealing his breath. Tears welled up instantly, spilling over his lashes and down his temples into his hair. His nails, usually so careful, dug sharp and desperate into the muscles of Kakashi’s back.
Kakashi went utterly still, buried to the hilt, his own face a mask of shock at his own action. He felt the fierce clench of Fuu Jin’s body around him, the tremors of pain. “Shit. Fuu. I’m sorry,” he breathed, the anger gone, replaced by a panicked guilt. He dropped his forehead to Fuu Jin’s shoulder. “I’m sorry, I’m sorry, I didn’t mean to hurt you.” He didn’t pull out.
Slowly, agonizingly slowly, he began to move. Not thrusting, just rolling his hips in a tiny, shallow rock. He watched Fuu Jin’s face intensely, his own breath held.
The blinding pain began to recede, replaced by a deep, full ache. Then, with another gentle roll, a new sensation sparked—a hot, internal friction that made Fuu Jin’s breath hitch. His body, so long deprived, began to betray him, softening, accepting, seeking more of that feeling. The tension in his limbs began to seep away, replaced by a gradual, unwilling relaxation.
“See?” Kakashi whispered, his voice thick. He pulled back almost all the way and slid in again, slow, claiming the tight, clenching heat. “See how good it is?”
Fuu Jin couldn’t answer. A helpless moan was his only reply. The line was gone, vaporized. There was only this: the weight of Kakashi’s body, the incredible fullness, the slow, deliberate drag of his cock that was starting to ignite nerves he’d forgotten existed.
Kakashi fucked him like that for a long time, with a patience that was its own kind of obsession. Long, deep, pushing thrusts that filled Fuu Jin completely, each one punctuated by a soft, wet sound and a gasp. He marked every inch of skin his mouth could reach—his throat, his collarbones, his smooth chest—sucking dark, possessive bruises into the white canvas of Fuu Jin’s body.
The pace gradually lost its patience. Kakashi’s hips began to piston faster, driving into him with more force. Fuu Jin gasped, clinging to him, his legs wrapping around Kakashi’s waist to take him deeper. The world narrowed to the slap of skin, the creak of the bed, the raw, animal sounds of their breathing.
Kakashi came with a choked-off groan, pulsing hot deep inside him, his whole body shuddering. But he didn’t stop. His stamina was monstrous, his youth and training and sheer will keeping him hard even after his release. He kept moving, fucking Fuu Jin through his own orgasm and into a second wind, his cock still buried to the hilt, now slick with his own spend.
The night blurred into a sweaty, aching, relentless cycle. Fuu Jin lost count of the rounds, the releases. Kakashi would turn him over, press him into the mattress, and take him again, always finding a new angle, a new way to wring a broken sob or a pleading whimper from his throat. His own neglected cock lay hard and leaking against his stomach, touched only by the friction of the sheets, until Kakashi finally took him in a rough, quick grip and sent him shattering over the edge, his vision whiting out.
He was filled, over and over, Kakashi’s cum warming him inside, a sticky, leaking proof of the night’s transgressions. His entire body was a map of possession—love bites purpling on his thighs, his hips, his neck, the sharp line of his jaw.
When the first grey light of dawn finally crept through the window, painting the room in pale, cool tones, Kakashi collapsed. He finally, truly spent, his body heavy and relaxed. He slid out, a final trickle of semen following, and draped himself over Fuu Jin’s ruined, sensitive body, nuzzling into his sweat-damp hair. A sigh of profound, satiated contentment left him. Within moments, his breathing evened out into the deep, untroubled rhythm of sleep.
Fuu Jin lay beneath him, awake, staring at the ceiling he knew as well as his own. The heat of Kakashi’s body was like a brand. The ache between his legs was profound. The smell of sex and salt and Kakashi filled his lungs. He was trapped, not just by the weight, but by the irreversible line that had been crossed in the dark. The first kiss felt a lifetime ago. He closed his eyes, but sleep didn’t come.
He closed his eyes, but sleep didn’t come. Not for a long time. Exhaustion was a weight in his bones, but his mind skittered, a frantic animal in a cage. The feel of Kakashi, the smell of him, the shocking, violating fullness—it played on a loop behind his eyelids. Eventually, the sheer physical drain won. His breathing deepened, the sharp edges of the room softening into the blurred landscapes of memory.
He dreamed of saké. The warm, earthy smell of it. The way the ceramic cup felt too large in his eighteen-year-old hands. Sakumo’s laughter, a rich, comforting sound that seemed to vibrate in the floorboards of the old house. It had been his birthday. Sakumo had cooked, the kitchen filled with steam and the sizzle of fish. He’d been so nervous, so desperately in awe of the legendary shinobi who looked at him like he was something precious.
The dream shifted, fluid as the alcohol in his veins. Sakumo’s hands, broad and scarred, were infinitely gentle. They’d undressed him like unwrapping a fragile gift. There had been fear, a tight coil in his stomach, but Sakumo’s voice had melted it away. Low, coaxing promises. Easy. Just for me. You’re so beautiful. He’d become pliant, pudding in those steady hands.
The pressure. The sting. He remembered crying out, hot tears leaking from the corners of his eyes. Sakumo had kissed them away. Shh. Almost there. You’re taking me so well. And then, the pain had transformed, melting into a deep, thrilling fullness that made his toes curl. Sakumo moved inside him with a slow, devastating patience, each drag of his cock a promise etched into Fuu Jin’s body. I’m serious about you. I want you here. With me. The words were whispered against his lips between deep, rolling thrusts. Fuu Jin had believed him with every fiber of his being. This was it. This was forever.
The dream-Sakumo’s pace changed. The gentle rocking became harder, more demanding. Fuu Jin writhed, clinging to muscular arms, his cries muffled against a strong shoulder. The cock inside him slammed deep, nailing a spot that made his vision flash white. A gasping, arching shock of pleasure tore through him, so intense it felt like violence.
His eyes flew open.
The face above him wasn’t Sakumo’s. It was younger, sharper, a single dark eye burning with a possessiveness that had no patience for gentleness. Kakashi. He was already buried to the hilt, his hips pistoning in a fast, brutal rhythm that shook the bedframe. The sensation wasn’t a memory. It was present, raw, and overwhelming.
“Mm. Woke you up,” Kakashi mumbled, his voice rough with sleep and lust. He didn’t stop. Not for a second. The slap of skin was loud in the bright morning light.
Fuu Jin could only grasp at Kakashi’s shoulders, his mind still tangled in the ghost of a kind touch, his body brutally present in a reality of frantic fucking. A distant, hollow pang in his stomach reminded him he was hungry. It was a stupid, mundane thought, adrift in a sea of physical upheaval.
Kakashi’s grip on his hips tightened, fingers digging in hard enough to bruise, guiding Fuu Jin’s pliant body to meet every snap of his pelvis. He leaned down, capturing Fuu Jin’s mouth, sucking on his tongue with a vulgar, wet hunger. He stared directly into Fuu Jin’s dazed, unfocused eyes as he fucked him, claiming his mouth, his body, his waking moment.
With a final, shuddering groan, Kakashi stilled, pulsing deep inside. Fuu Jin felt the hot spill, the twitching of Kakashi’s cock against his sensitive walls, and he groaned at the feeling—too much, yet his traitorous body clenched around it.
Kakashi gently pulled out. He kissed Fuu Jin’s sweaty forehead. “I have to go. Mission,” he said, his breathing already evening out. “Probably a couple days.”
He tucked the covers around Fuu Jin’s spent body, his gaze satisfaction. “I’ll look forward to coming back.” He dressed with the efficient, silent speed of a shinobi, pausing only to adjust his headband. Then he was gone. The front door clicked shut softly.
Silence, vast and heavy, flooded the room.
Fuu Jin lay there, feeling the wet, sticky ache between his legs. Why had he gone along with it? One kiss for a lonely birthday. That was the line. But he’d never been good at lines. A kiss became a touch, a touch became everything else. He’d enjoyed it. That was the shameful, guilty core of it. His body had sung for Kakashi in a way it hadn’t for anyone since Sakumo.
He’d promised Sakumo he’d look after the boy. A cold knot formed in his stomach. He didn’t think Sakumo had meant this kind of looking after.
And Kakashi… He wouldn’t accept a new boundary now. Not after this. The line was vaporized. Crossed, trampled, fucked into oblivion. Fuu Jin knew it with a certainty that made him feel hollow.
Don’t think about it. He’s gone for days.
His bladder demanded attention. Then his stomach growled, a loud, rude sound in the quiet. Practical needs. They were easier.
Moving was a ordeal. Every muscle protested. He felt the slick drip of Kakashi’s cum down his thigh as he swung his legs over the side of the bed. The evidence was on the sheets, too—damp, dark spots. He ignored it.
The hallway floor was cool under his feet. The house was so still. He used the bathroom, washed his hands, avoided looking at the mirror. In the kitchen, the stew from last night sat in the pot on the cold stove. He lit a flame beneath it, moving slowly, methodically. He fetched a bowl, a spoon. He ate standing by the counter, not tasting it, just filling the void.
The silence was a physical presence. It pressed in on him, and for the first time in years, the old Hatake compound didn’t feel like a refuge. It felt like the setting for a crime he had willingly, helplessly, aided in.