[Honestly, the fact that he was so calm about it was almost more unnerving than the confession he'd just made.]

What's the matter with you?? Some teacher you cared enough about to risk your own life for completely betrayed you! Just to steal some technology from your little brother!?! You're acting like it's not even that big a deal!!

[That wasn't really fair. She'd seen him start to get upset earlier, when she'd thought it was just because he'd accidentally gotten himself killed.

Maybe Tadashi had already had time to come to grips with all of this, but his demeanor still had her dumb-founded nonetheless.]