[What the hell is he doing? Firo can't even tell what that question means to answer it.]

Come on, Seto, you're... you're not actin' like yourself.

[He can't bring himself to say he's worried--not yet--even as desperation enters his tone.]

Just tell me what happened, all right? Whatever it was, I won't be mad.

[As much as he tries not to let it slip in front of the kids, Firo's been told he has a bit of a temper. Maybe that's why Seto's clamming up?]