Hiro is finding it hard to cope with Tadashi's loss now that Callaghan is in jail and Baymax is rebuilt. So Baymax makes Hiro keep a journal in order to improve his emotional state.

Hiro is going through a self conscious stage in his adolescent life and struggles to find his own image. His friends decide to help and Tadashi is not amused. Alive!Tadashi because I'm in denial. Like the rest of this fandom.