I'm going to need a little exposition for why he's so huffed up for someone calling his ugly. like, he's been a doormat all his life, I assumed that he's used to people criticizing him, even the no basis remarks like hers. he sure has been getting used to being confident, but just a little bit inside his head?
I like the crossdressing, because it's still being true to their character without being coy or letting the "embarrassment" take the center stage for this arc. *pfft, iruma's going to have to explain to teacher why they have a "new family member"