I get it what the guy means but is still not right. Thi still shows how the boy is taking advantage of the girl. She may be alright with him looking like a girl but lying to her is a no-no. Plus, his personality is just rotten. I wouldn't be surprised to see the author making the girl accept the boy. I would want to see both being aggressive. It is always the girl being submissive, but of course, that is how Japanese culture is. Whether or not the women there are like that, they must behave like that. I pity them :<
You're being a bit harsh and unreasonable with this story, I mean yeah the guys desires are a bit dirty but that's part of the appeal. A sorta innocent vs's sinful contrast/kink. Here's a story(on mangadex) I recommend that's a reversal of sorts of this scenario, I hope it gives you better perspective on this kind of demographic
Josou Danshi wa Skirt wo Nugitai!
Or
The Crossdressing Boy Wants to Take Off His Skirt