[ The expression on Hiro's face is anything but burdened. Awed, maybe, and a little shy. He doesn't really remember his father, after all; he's suddenly beset with the feeling that he has to be a good son to this version too. Tough to do when he already knows a Hiro, is surely proud of him ... Another small spike of jealousy goes through him. His alternate may not have had a brother, but he does have his father. Alive in some way, if fundamentally altered.

His tears slow to a stop. First things first: ]

You're not forcing me to care about anyone. Me and Tadashi liked you already.

[ And love isn't too far a step up from that. Now for the real question... ]

... How? How did he do it? You're really my dad, right?

[ Probably he should distinguish that by calling Baymax "his" dad, but he doesn't really care right now. ]