Silly NPC. Give in to your hatred, view the protagonist as the annoying little shit he is, and be CRUELER.
I dislike the idea that "Speaking slowly will make you fall for him" as that's not how real romance works, if you aren't interested in someone, you won't fall because of some sweet words, but I understand that removing it is basically just a visual novel. And the concept by itself of "Leave me alone so I can fucking study" and the appropriately themed commentary you deliver to this stupid boy with nothing better to do is satisfying. So I'd like to believe that the harmful implications of that theme are unintentional and it would be nice if it was considered more thoroughly, but if that's the only game mechanic that stuck in a very time limited space to try and think of how to make a "Hating Sim" then I understand why.
This remind me of "Class of '09" my favorite game of all time. A game that markets itself as a "Reverse Dating Sim" as well.