For once, Kouchisei was used to having a person in his room. What he wasn't familiar with was having a girl there. He'd never allowed anybody inside his bedroom that hadn't been a parent. It was a place where he could be who and what he was, and what he wanted.
He had made other plans. So, naturally, he'd been pulled inside by Kozue. Also it was a Kou-shaped characteristic that what she had said flew over his head and out the window.
He shrugged, not knowing quite what to say, "Read some. Fell asleep after - it's just too hot. Why?"