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One shirt did it all

Summary:

When Sanemi gets home from Giyuu's place, something is different about him and Genya, of course, asks.

Notes:

My first contribution to the Sanegiyuu week. Hopefully first of many. :)

Work Text:

“I’m back,” Sanemi yelled into the apartment as soon as he arrived.

Genya hadn’t seen him all day. Even now it was awfully late, Genya would be long asleep under the usual circumstances. But alas, he had a midterm tomorrow, well more like later today, and so he was still up and studying.

He pushed his chair away from the desk, the small wheels gliding against the floor. He stopped it when he got a view of his older brother across the hall and hanging his jacket by the door. There was something different about him but Genya couldn’t quite put his finger to what exactly seemed so odd.

Sanemi, finally done with his shoes and satisfied with how they were put away, looked up and walked in the direction of his own room. “Hey, dude,” Genya yelled at him, his look one of disbelief. Surely he wouldn’t get home at the crack of dawn and expect Genya not to have questions.

He rolled his eyes but eventually shuffled to the other room. “What, bitch?”

“Why the hell are you so grumpy?”

Sanemi’s mouth fell open. “Is that why you called me here? I swear to God, don’t test me.”

“It’s just the first question? And you still haven’t answered it yet, by the way,” Genya pointed out. He was not backing down without a proper explanation.

Hesitant, Sanemi adjusted the collar of his shirt, drawing Genya’s attention to it. That wasn’t one of Sanemi’s shirts. Genya would know, but it also wasn’t a shirt he hadn’t previously seen. Genya’s eyebrows shot up even without him realizing it. That was... an interesting development.

He decided on another tactic. “How is Giyuu doing?”

“He’s good, just always busy. Can you fucking believe it?” Sanemi walked further into Genya’s room, half sitting, half lying on his bed. “There is this exam and that, then he has to do laundry, another shift, and okay, I freaking get it, life gets busy, but he could make more time for me, you know? It fucking sucks.”

Genya could see what was happening there. “But you two spend a lot of time together already?”

“It’s not enough.”

“Did you try talking to him about it or something?” Genya was so not a relationship coach. Just what was he supposed to tell Sanemi? He really didn’t know. From an outsider’s perspective, those two were like boyfriends.

“Nah,” Sanemi prolonged the word.

“God, you’re so dumb.”

“Hey!” Sanemi shot out of the bed, pointing an accusing finger at Genya, ready to say something, probably mean, before that very same hand went to his forehead instead. “Shit, I shouldn’t have had that glass of wine. Goddamn Yuu.”

“You drank together?” Genya asked, not really that surprised. He could smell the faint smell of alcohol coming from Sanemi when he moved around.

A dumb smile crossed Sanemi’s face. “We did a lot of things together.” As if deciding that he had already allocated more than enough of his time to Genya, Sanemi moved toward the door and walked out.

“Hey, I wasn’t done talking,” Genya yelled after him, not caring about their neighbors one bit. Sanemi flipped him off and shut his own door.

Genya was intent on finishing this conversation, even if it wouldn’t be now. He needed to get some sleep before his exam, Sanemi and Giyuu could wait.

By the time his exam was over and he nearly arrived home, the talk with his brother was almost completely forgotten. Genya opened the door, letting himself in, not bothering to knock or anything. After all, he lived there as well.

The sight that welcomed him brought that conversation right back into his mind. “Oh, Giyuu, hey,” Genya said as soon as the door was opened. Giyuu was there in their living room, sitting pretty much in Sanemi’s lap.

“Hi,” Giyuu greeted him back, not moving an inch.

Sanemi, on the other hand, was growing red as tomato, his hands clasped firmly around Giyuu’s arms but he seemed hesitant about something, probably about throwing Giyuu away from him.

“Too late, man,” Genya said, reading Sanemi like an open book and doubling with laughter. It was safe to say Giyuu was very much confused, not getting it.

“Fuck you.”

Not even Sanemi’s exasperation could calm him down. If anything, it only fueled his mirth. At this point, Giyuu turned to Sanemi with a questioning look.

“Don’t ask,” Sanemi said, still looking embarrassed.

Genya took a deep breath after a while, his laugh ceasing at last. “Anyway, Giyuu, hope you don’t expect that shirt back, Nemi literally never does his laundry.”

The addressed man only shrugged one shoulder. “He can keep it.”

“You two honestly need to stop acting like boyfriends.” Genya threw his bag by the armchair and plopped down on it. “People will assume stuff.”

“It’s not like they would be wrong,” Sanemi said with an amused scoff. Both Genya and Giyuu’s eyes snapped to him. Only then did he realize his mistake, the grin on his face fading instantly. “Shit.”

“Wait, hold up, are you two actually dating? And you didn’t tell me?” Genya was livid. “How long?”

“Uhhh-” Sanemi was not answering.

“Three weeks,” Giyuu said without missing a beat.

“Three weeks? And you didn’t tell your only brother? Why?”

“I don’t know, man, it’s still fresh. Stop making it such a big deal.”

“It is a big deal, though.” Genya crossed his arms.

Sanemi rolled his eyes, but Giyuu smacked him right after. At least Giyuu was being nice enough.

“Okay, fine. Genya, baby bro, pain in my ass, I’m dating Giyuu, satisfied?”

“Don’t be an ass. You should’ve just told me right away.” Genya was still a bit hurt over the fact that neither of them cared to tell him for literal weeks and pretended around him. And they must have hidden it a lot because Giyuu was hanging around their apartment every few days.

Sanemi was quiet for a second. “Sorry,” he said, feeling bad because of Genya’s hurt face.

Genya sighed, standing up from his seat and taking his backpack. “Whatever, I’m happy for you two, yada, yada.”

Sanemi snickered. They were good.

As Genya closed the door of his room, deciding to leave those two alone to their own activities, something dawned on him. “Explains the shirt,” he muttered to himself.

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