I think he's just private.

[he looks around, at the shadow students whispering throughout the hallway]

It's not fun to have people jump to conclusions about you. So maybe he's trying to not make people worry about him. [there's a wry smile at that comment] Though... He definitely went overboard with this.

[so far off tract that it's done the opposite of what Amane wanted... Instead of hiding from everyone, he's gone and broadcasted it instead]

... Though I guess it makes sense that it would be hard to find him in here.