"Nothing in particular." It's absolutely light and easy; he doesn't notice the hesitation.

"I didn't see as much of you all as I wanted, that month—I was busy with Sae, obviously, and with my schoolwork after all the time I missed last year. But we managed to meet a few times—mostly here, though I even snuck into Shujin once. That was fun."

Again, the tinkling little laugh—but then he frowns. "Ren, what is all this about? Have you forgotten? Is that why you seem so down, all of a sudden?"