Yamato's a momma's boy, y'know? And she always worries about him the most because he can lose track of himself sometimes.

[Look, Junko can't do anything about how weird the situation is. They all needed some saving and so she showed up to bail Yamato and her mom! That's all!]

Seriously, they'll talk and come back normal, don't worry about it. Now: Stories.

[So tell her things while she never forgets that he got a little turned on there for one reason or another.]