**Naruto x Tsunade – Forbidden Sake Nights**
*(Post-war setting. Naruto is 20, Hokage-in-training. Tsunade is retired from the position but still very much the legendary Sannin. Everyone is an adult. This is pure smut with cheating elements: Naruto is married to Hinata, Tsunade is single but the affair carries heavy guilt.)*
The Hokage Tower was quiet after midnight, the village lights twinkling like distant stars through the wide windows. Naruto slipped inside without knocking—old habit from years of barging in unannounced. He found Tsunade exactly where he expected: slumped in the oversized chair that used to be hers, a half-empty sake bottle in one hand, her robe loosened just enough to show the deep valley between her breasts.
She didn't look surprised. Just tired. Beautifully, dangerously tired.
"You're late," she muttered, voice husky from drink. "Thought you'd chickened out."
Naruto rubbed the back of his neck, the wedding band on his finger feeling heavier than any chakra chain he'd ever worn. "Hinata's asleep. I… told her I had late paperwork."
Tsunade laughed—low, bitter, intoxicating. "Paperwork. That's what we're calling this now?"
She set the bottle down and stood. The robe slipped a little further off one shoulder, baring smooth, pale skin that glowed under the lamplight. Her breasts strained against the thin silk, full and heavy, nipples already pebbled from the cool night air or anticipation—maybe both.
Naruto's throat went dry. He'd seen her like this before—too many times now. The first had been an accident: too much sake after a long mission debrief, her hand on his thigh, his mouth on hers before either could think. After that… it became habit. Addiction.
He crossed the room in three strides. Tsunade met him halfway, her fingers curling into the front of his jacket, yanking him down. Their kiss was messy, hungry—teeth clashing, tongues fighting for dominance like they always did. She tasted like sake and regret.
"Gods, kid," she breathed against his lips. "You're gonna ruin me."
"You're the one who keeps calling me here."
Her hand slid down, palming the growing bulge in his pants. "Because you're the only one who can keep up."
Naruto groaned, hips bucking into her touch. He pushed her back until her thighs hit the edge of the desk—*her* old desk. Papers scattered. Neither cared.
He tugged the sash of her robe open. It fell away like silk water, revealing everything: the generous swell of her breasts, the soft curve of her belly, the dark blonde curls between her thighs already glistening. Tsunade was shameless in her nudity, chin lifted defiantly even as her cheeks flushed.
Naruto stared. He always stared. Like the first time. Like every time.
"You're fucking gorgeous," he rasped.
"Flattery gets you everywhere, brat." She hooked a leg around his waist, pulling him flush against her. "Now shut up and fuck me before I change my mind."
He didn't need telling twice.
Naruto lifted her onto the desk with ease—years of training, Kurama's chakra, sheer want. Tsunade spread her legs wider, guiding his hand between them. Two fingers slid inside her easily; she was soaked, hot, clenching around him like she'd been waiting all night.
"Fuck—yes, like that," she hissed, head falling back. Her breasts bounced with each thrust of his fingers. Naruto leaned in, taking one nipple into his mouth, sucking hard while his thumb circled her clit.
Tsunade's nails dug into his shoulders. "Don't tease. I need you *now*."
He pulled his fingers free, slick and shining, and freed himself from his pants. His cock sprang out—thick, hard, veins pulsing. Tsunade licked her lips at the sight.
She wrapped her hand around him, stroking once, twice. "Still so big. Hinata's a lucky girl."
The mention of his wife made Naruto flinch. Guilt twisted in his gut like a kunai. But Tsunade just smirked, guiding him to her entrance.
"Don't think about her right now," she whispered. "Think about how deep you're gonna bury this cock in your old sensei."
He thrust in one hard stroke.
Tsunade's back arched off the desk with a sharp cry. "F-fuck! Yes—!"
Naruto set a brutal pace—deep, punishing, the desk creaking under them. Her breasts bounced wildly with every slam. He grabbed them, squeezing, thumbs flicking over her nipples while he pounded into her.
Tsunade's legs locked around his waist, heels digging into his ass, urging him harder. "That's it—fuck me like you mean it. Like you can't get enough of this old pussy."
He growled, pace turning feral. "You're not old. You're perfect. So fucking tight—gods, Tsunade—"
She laughed breathlessly, then moaned when he hit that spot inside her. "Harder. Make me forget I'm supposed to be the responsible one."
Sweat slicked their skin. The room filled with wet slaps, her moans, his grunts. Tsunade's fingers found her clit, rubbing in frantic circles.
"Come inside me," she demanded. "Fill me up. Mark me like you can't mark her."
The words pushed him over. Naruto buried himself deep, hips stuttering as he came with a choked groan, pumping rope after rope into her. Tsunade followed seconds later—walls clenching, milking him dry, a long, shuddering cry tearing from her throat.
They stayed like that for long minutes—panting, trembling, still connected.
Then reality crept back.
Naruto pulled out slowly, watching his cum drip from her swollen folds. Guilt hit harder now.
Tsunade sat up, robe half-on again. She cupped his cheek, thumb brushing his whisker marks.
"Go home to your wife, Naruto."
He swallowed. "I—"
"Don't." Her voice cracked just a little. "Just… go."
He dressed in silence. At the door he paused.
"Next week?"
Tsunade looked away, picking up the sake bottle. "Maybe."
He left.
Behind him, Tsunade took a long drink and whispered to the empty room:
"Fuck."
Because she knew he'd be back.
And so would she.