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It was good that Yuji wasn’t home, because Nanami just couldn’t help himself.
She was splayed out before him, her long hair spilling across his pillows. It was the same color as the red wine they’d split earlier in the evening; the same one that he was now pleasantly buzzed on. He couldn’t help but think to himself he should try this more often, the wine, because she was so wet around his fingers—wetter than he was used to—and he was starting to feel spoiled.
Their gazes met. Her glassy eyes were playful. A smile played across her lips before he captured them with his own. He broke the kiss and his eyes found her breasts, perky and fuck, so soft. His mouth moved hungrily down her neck and chest until he found a nipple to suck greedily on. She gasped when he gently bit down, grinding against him as he pumped his fingers faster.
“Please,” she groaned when he bit down harder and circled his tongue around the hardened nub.
He kissed her lower, lower, lower, until he was sucking at her thighs. She tugged at his hair, long nails scratching at his scalp in a way that made him shiver.
“Nanami-san,” she gritted out, “More. Please.”
His cock twitched at the formal use of his name. He licked her, just once, long and slow, before pulling out and away and standing. He placed his hands under her knees, roughly pulling her to the very edge of the bed. She breathed out a surprised laugh when he grabbed her crimson hair and pulled her upwards, bending down to kiss her roughly. Breaking the kiss, he kept one hand in her hair while the other undid his belt buckle. Ever quick to catch on, her own hands eagerly took over, and soon he was stepping out of his slacks and boxers while she kissed his bare torso.
“On your knees,” he demanded gruffly.
She obliged, getting off the bed and dropping to her knees in front of him like she was praying, though there was certainly nothing holy about it. He fisted his hand tighter in her hair, looking at her with half-lidded eyes. She cried out at the roughness, the stringy wetness of her arousal slowly dripping to the ground. Her flushed cheeks and swollen lips complemented the red hue of her hair.
She held his gaze, eyes dancing in the low light. "I bet your girlfriend doesn't do this," she said lowly before taking his cock in her mouth. He used her hair to roughly pull her closer to him and pressed against her head until she stiffened. She adapted quickly, spreading her fingers wide across his ass with one hand while the other held the base of his cock where her throat couldn’t reach. She slurped him audibly and he gritted his teeth; he liked the sound, liked hearing his lover actually being into it. He gripped the side of her face hard and she looked up at him, her mouth full of his cock. She tried to smirk but he stopped her before she could, pushing her head closer to him still. She whimpered but he did not give in; instead, he loosened his grip on her face and stroked his thumb over her jaw. He felt his cock graze the back of her throat.
“Good girl,” he praised, his voice hoarse. He brushed her hair away from her face, admiring her. “Very good girl.”
She hummed and closed her eyes, bobbing her head earnestly while he kept a hand on the back of her head, gently guiding her.
The wine had left him feeling tipsy and content, and he let himself take a moment to admire how sexy she looked: on her knees, hair wild, the soft curves of her body begging to be explored. Once again using her hair to maneuver her, he pulled her away until his cock released from her mouth with a pop! and she looked up at him with big, lustful eyes. “Nanami-san, please,” she said, her voice a sweet mixture of desperation and adoration, “Fuck me. Please.”
He just couldn’t help himself. And who was he to deny her?
He helped her up and guided her back to the edge of the bed, positioning himself in front of her. She began touching herself, never breaking eye contact as her fingers circled her clit and he positioned her legs over his shoulders. Up close, he could see how much wetter she’d gotten—an impossible feat, he would have thought—but the evidence was clear: the insides of her thighs glistened and threads of fluid clung to her warm skin.
“I was going to fuck you,” he said, dropping to his knees before her, “But I think I need to clean you up before I do.”
“Clean me up later,” she whined, rubbing her clit faster.
Instead of answering, he licked the wetness off her thigh. The taste and scent of her only fueled him, and he couldn’t stop himself from licking her other thigh eagerly, avoiding her pussy entirely.
“Kento,” she chided.
He tsked but obliged, flattening his tongue to get as much of her pussy at once as he could. She sighed above him and he felt her legs stiffen over his shoulders. So wet. His tongue dipped into her hole then slowly up to where she continued rubbing herself. He licked between her fingers and she moaned, her heels digging into him.
He could have licked her for hours—wanted to, needed to—but his cock was so hard that it was starting to hurt, which was his favorite kind of erection, and he wasn’t going to waste it. She breathed a sigh of relief when he lifted himself up, one hand wrapped around her ankle while the other lined himself up and pushed inside of her without ceremony.
He took a moment to thrust slowly, drinking her in: the red hair was something he was not used to, and part of him felt dirty for how much he enjoyed it. The thought made him quicken his pace, spreading a hand over her stomach and watching her tits bounce. He knew from experience his cock was sizable, but she was still so tight, despite the wetness, that she gasped and winced when he hit certain angles.
“Too much?” He asked, though he didn’t slow his movements.
“No,” she choked back.
“Good girl,” he said again. “Turn around then, so I can really fuck you.”
A devilish smile spread across her lips. She flipped over onto her forearms and knees, arching her back prettily. Her hair spilled over her shoulder and he immediately reached for it, yanking her head back to kiss her. He allowed himself one last indulgence—spreading apart her ass cheeks and lapping at her exposed pussy—before thrusting inside of her once more. Her hips felt good in his hands and he liked the way her back arched; he placed one foot on the bed so he could steady himself and fuck her harder.
“Fuck, fuck, fuck…” she chanted as he thrust. She reached beneath her and began rubbing her clit again. He suddenly wished he’d had the forethought to have a vibrator within reach instead of in a box inside of his closet.
“Let me,” he said, leaning over her and replacing her hand with his. His other hand wrapped around hers on the mattress.
Her head dropped and her breathing became labored. “Na-na-mi…” she said in time with his thrusts, her voice getting higher and higher with each syllable of his name. He suddenly felt a rush of extreme wetness as she came around him, clear liquid gushing down between them, more than he’d ever seen before. The sight of it caused his own orgasm to catch him off guard, hitting him suddenly. He released inside of her with a final groan.
Well, he thought a moment later, when he realized what had happened and a manly sense of pride began swelling in his chest, That’s new.
“Well, that’s new,” she said shakily.
She collapsed onto the bed and rolled onto her back. He gave her a soft kiss before lying beside her; she nuzzled against him. “I think we should have more wine,” he murmured into her hair.
He held her from behind as they padded to the kitchen together—her in nothing but his shirt, much too big on her, and him in nothing but sweatpants that hung low and loose over his hips. She looked as disheveled as he felt and maybe it was the wine or the sex, but he felt warmth spread throughout his body. She placed her face into his neck, inhaling deeply, before placing a small kiss there.
Just as his lips touched hers, the unmistakable sound of a key sliding into a lock broke through the quiet apartment.
“I’m back!” Yuji called happily.
When Nanami looked at her, her eyes were wide. Shit. He would hate for the young man to see this.
“Go,” he mouthed quietly.
She didn’t need to be told twice. She bolted, heading straight to the bedroom. Nanami followed, though a second too late. When he rounded the corner and Yuji’s gaze landed on him, he knew they’d been caught red handed.
“Nanami,” Yuji said darkly, eyes slowly shifting from his mentor’s bedroom door to the man himself. Nanami knew what he looked like: shirtless, disheveled, flushed—it was clear what he’d just been doing.
“Itadori,” Nanami said evenly.
“What the hell is going on here? Who the hell was that? There is a woman—who is not your girlfriend—in your bedroom.”
Nanami inhaled slowly. He did not look away. He did not panic. “I see how it would appear that way,” he finally said carefully.
Yuji’s hands flew into the air. “Appear that way?! Nanami—you—you can’t cheat on her! She’s amazing! She brings us snacks! She listens to me when I talk about movies! She helped me train! She likes you even when you’re all—” Yuji mimicked Nanami’s neutral deadpan face. “—that!”
“No—it’s not—Itadori, listen—”
“You cheated on her!” Yuji exploded.
“No,” Nanami said, but it came out more strained than reassuring.
“Don’t! Don’t lie! I saw her! I saw her hair!”
Nanami pinched the bridge of his nose, exhaling slowly. “Itadori. You’re making assumptions.”
“What else am I supposed to think? You look guilty.” Yuji shot back. His voice cracked, the betrayal raw. “I thought you were better than that.”
Nanami’s irritation flared, but he swallowed it down. He could not explain the truth, not without humiliating her. His silence only fueled Yuji’s anger.
“You’re supposed to be my mentor,” Yuji continued, voice shaking. “Someone I look up to. And you’re sneaking around like this? I should tell her. She deserves to know.”
Nanami’s patience thinned. “You should learn not to jump to conclusions.”
Yuji’s fists trembled. “Don’t lecture me right now. Not when you’re the one doing something wrong.”
The tension hung heavily in the air. Finally, Nanami spoke, his voice low but firm. “Go to bed, Itadori. We’ll discuss this in the morning.”
“I’m telling her,” Yuji said firmly.
“No, you’re not.”
“Why not?”
“Because you don’t understand what you saw. And I am not explaining it to you tonight. Now, go to bed. We will discuss this tomorrow when you are clear headed and I am clothed.”
Yuji glared at him, hurt and fury clear on his face. “I thought you were better than this,” he said before storming off to his own room. The slam of the door echoed through the apartment.
Nanami sighed before turning and walking to his bedroom, closing the door behind him. Inside, his girlfriend sat cross-legged on the bed, now dressed in her usual satin pajama set, the crimson wig discarded on the floor. She looked at him with a sheepish expression. “I’m sorry, Kento,” she said.
He sighed again, sitting heavily on the edge of the bed, rubbing the bridge of his nose. “It’s fine.”
“Thank you,” she said, coming up behind him and wrapping her arms around his waist, resting her chin on his shoulder. “For protecting my privacy—our privacy—even when it was difficult.”
“Of course,” he said, kissing her temple. “I’ll explain it to him in the morning. I don’t know how yet, but I will.”
It was silent for a moment before she asked, “Do you think we should teach him about the birds and the bees?” She fell backwards against the pillows, arms stretched above her.
He couldn’t help but crack a smile. “You can do that,” he said, crawling up towards her until he was straddling her. “You wanted to use the wig.”
“Yeah, but you liked it,” she teased, wrapping her arms around his neck. “Nanami-san.”
“Who would have thought some stranger with red hair would be nicer to me than my own girlfriend?”
She grinned wickedly. “If you want, that stranger can be mean to you, too.”
“I look forward to it.”
Two days later
When Nanami entered the facility lounge, Gojo was already there. Which was unfortunate.
The white haired man slid a cup of coffee to Nanami with the slow and smug confidence only he could get away with. “So,” Gojo sang, leaning on one elbow. “I have a question for you.”
“No,” Nanami said immediately.
Gojo continued anyway. “Do you know where one might acquire a beautiful long red wig? Asking for a friend.”
Nanami closed his eyes and contemplated how best to escape—death seemed like the most viable option.
Gojo grinned. “So, what was the scenario? Dangerous assassins who fall in love? Sexy librarian? Hot stranger at a bar?”
Nanami felt his brow twitch but he did not respond. Instead, he simply picked up his coffee and walked out of the room. He could hear Gojo’s laughter echoing in the hallway.