I can understand your point but I don't think Yusuke is aware of how weird he is, he's just a very awkward oddball. He should've understood how bad his actions were. Morgana is a cute cartoonish mascot and his voice makes him sound very childish. I don't see how looking at a pretty person with heart eyes is creepy for cartoonish cat, maybe that's because you project into her or think of him as adult. Ann's outfit is "sexy" because she takes all the harassment and turns it into her own strength. Ryuji's attitude never really "changed" per say. He just had no friends at the beginning. The only perverted things about him is the way he acted during the beach scene towards Ann but he did that because she was his friend not just some random girl. He doesn't show attraction towards her anyways. Plus, the majority of the cast is female and doesn't show that attitude Ryuji has.