[ Will's lips twitched, though his expression was not unkind as he looked Yuuto in the eyes for a moment, before his gaze skipped off to the side. ]

I'm a teacher, back in my world. [ He explained. ] My classroom is full of adults, and I can tell you that none of them have it figured out as completely as they like you to believe.

[ The unspoken suggestion being, perhaps Yuuto didn't need to be jealous of what wasn't really there in his classmates. ]