[Wait, he's from Japan, too? And he still doesn't know about... quirks? Her cheerful façade starts to show a crack or two, because that just doesn't make any sense. BUT it's not like she has very much time to think through this sudden revelation, because he's suddenly asking her about something that is clearly very important.]

I don't-- [No, wait. It's a hero's job to keep people calm in high pressure situations, so let her just take a deep breath and start over.] I haven't seen anyone that matches that description, but it's a little too crowded down here to actually search for him. And who knows? Someone else may have already helped him get up top, so why don't we go up there and look?