Gen's expression softened as he watched her. A lot of the context was lost on him, but it's clear that she was having fun. That she was at home like this, experiencing joy and happiness. Given all the terrible things that'd happened, it was just ... it warmed his heart to see. Someone at least got some sort of piece of themselves back.

... But really. Gen squeaked a little. "Please, my friend! Watch the ink! I don't know how easily it'll come out of my clothes, I spent good points on these!"

Yet Gen was smiling too much, expression much to soft, to seem like he was mad at her.