How tf does the point system for this game work? I've gotten to 100 with multiple girls, but the closest I've gotten is "close friend" with the library girl one time; the other times were just "friend".
100 affection doesn't seem to do anything either, still got NTR'd by the otaku one time even at 100 affection.
Does anyone have a guide / tutorial?
It's a race. If you don't hit 100 favorability before the rivals, you can't do anything to get them. For the senpai going after Shizuru, it's straight forward. Reach 100 before the senpai and you'll get her. For Hazuki, you actually have less time. There's a scene that happens when the big guy (forgot his name) asks out Hazuki. It happens when the guy's favor is around 80. She accepts if you're below 100 favor with her. Even at 98 favor, she still reluctantly accepts dating the other guy. You miss your chance with her if that scene happens, even if you get to 100 favor while the other guy is still around 80.
It's not a very polished game, and there's no real nuance to it. It would be better if you still had to fight off the rivals after you get the girls. Or if you could win the girls back after your rivals get them (since it's heavily implied the girls don't really like having sex with the rivals).