[Understanding Ouma is a challenge on its own. But it hasn't escaped Shuichi's notice in the trials so far that there does seem to be a method to the madness. That is to say, the random distractions and tangents and subject changes are often not random at all. If Ouma is drawing his attention to something, there's a reason for it.

Shuichi frowns, but dutifully turns his attention to the key in question to examine it.]

It's a key, so it probably unlocks something in the school. It wouldn't be so expensive if we couldn't use it for something. [A beat, and he shoots Ouma a brief look.] Do you have any idea what?

[He asks, but he knows he isn't likely to get a real answer. As strangely helpful as Ouma turns out to be on occasion, he absolutely never makes anything that easy. The other boys just seems to enjoy making him figure everything out for some reason, as far as he can tell.]