As someone who doesn't really make his truly feelings about a series all that clear any more (I'd rather just post whatever snide comments pop in my head), I do genuinely like the majority of this anime
But I don't think it had a good enough long term plan when it came to sharing space between all of it's character so it just kind of blows it all on a loud messy climax. It at least tried to give each of it's character's at least one big moment of emotional catharsis, even if Plain Jane's came a bit too early and she essentially had no personal conflict to deal with besides having to get over her awkward hand ups with a guy who already decided to love her no matter what anyway (there was her expulsion too, but that's something all of the other girls had to deal with).
COMPLETELY forgot about him until you mentioned him, rip
I thought he at first was just some harmless dopey dude bro meant to act as a strawman for every common bad dating trope from a girl's perspective, so he was a bit sympathetic on that front. I thought he just wanted to break Momoko out of her shell with his upbeat attitude, but then he just turned out to be an asshole and felt betrayed knowing my sympathies were misplaced.