The signs were all there, but having been distracted with a one-on-one that Reo challenged him to, Seijūrō pushed them to the back of his mind. It wasn't until he and Kōki got back home and Kōki stalked off to their room and slammed the door shut that Seijūrō ran through the events of the day in his mind and realised that Kōki had been a lot quieter than usual, as well as having glowered in his direction quite a lot. He followed Kōki up the stairs and knocked at the door before going in.
"Did you really not understand that that meant 'leave me alone'?" he said, turning his head to look at Seijūrō before going back to his previous position; face-down against the bed.
Seijūrō sat next to him. "Did you really think that would stop me? If you really didn't want me to come in you would have locked the door."
Kōki propped himself up on his elbows and pulled Seijūrō's pillow to himself to pluck at it. "I think Reo has a crush on you."
Seijūrō gave a short laugh before Kōki looked at him, and actually seemed hurt. "He acts like that with everyone."
"I don't like it. And he's better at basketball and he was on your team…"
And he seemed so worried, trying futilely to cover it up with annoyance that Seijūrō could only kiss his neck and tighten his arms around his waist. "Am I going to have to convince you that you have nothing to worry about?"
"He had his arm around your shoulders."
"Kōki."
"So, yeah. I'll need a lot of convincing."
It was said pretty innocently; Seijūrō supposed he didn't realise how his words could be taken. "Gladly," he said against Kōki's neck before taking hold of his shoulder to flip him over onto his back, feeling a sense of triumph at Kōki's shocked expression, but quick acceptance as Seijūrō kissed him.