I think one of the funniest things about this is that Momose isn't misunderstanding anything and is absolutely correct about the situation. That's not something you see often in ecchi romcoms.
Oh... That is overt. I thought that this was going to be one of those ecchi that barely stayed P.G. by concealing the nipples, but I guess I was wrong. I prefer things this way but how did this get published? It's neither dirty enough to be adult or clean enough to be young adult.