[What is "this" that he needs to talk about... Yoosung's hope that he will be able to clear this up easily is plummeting. Did he actually uncover some kind of land mine here? If that's the case, he needs to come clean before he causes a situation they'll regret!]

Wait, wait... It's not like I'm trying to demand an explanation, okay? I was just... surprised! You see...

[He just points at the glasses again.]

It's because of these. They let me analyze our codes. It was just supposed to be so I could look out for trouble, but they're telling me things like your heart rate, and I... I didn't know what to think... you look the same as ever, after all...

[He's trying to remove the pressure from him. Although, he didn't say no to going anywhere with him. It's a big school, there would have to be somewhere to talk.]