[There's a long silence; Hiro takes a deep breath, wrapping his arms around himself and leaning back against the end of the bed. He averts his eyes, carefully studying the floor. He'd rather Tadashi didn't know at all, but Callaghan's words keep bouncing around in the back of his head. His brother would tell the truth, were the positions reversed.

But then his brother wouldn't have done it in the first place, probably.]

You should probably know now, because you're gonna find it in Baymax's logs eventually, but...when we were looking for the masked man...well. When we found him, actually. I uh...did something I shouldn't have.

[He almost looks to see the expression on Tadashi's face, but doesn't. He's too scared of what he'll find. So instead he just launches into the whole story, spitting it all out as quickly as possible.]

I, I got mad. I wanted him gone. So I took Baymax's healthcare chip out because that was the only thing stopping him from killing Callaghan, and then he wasn't Baymax anymore, he was just a really big weapon, and it was all wrong, and I made a mistake. That's it.

[A pause. Quieter:]

I'm sorry.