Childhood friend coming closer?
Generally almost every female character in harem or romance manga
1. Tell mc you are in love with him 1%
2. Use hopeless ways to drop hopeless signals and act all tsundere when he doesn't get it 25%
3. Do unnecessary things like "let me wash your back while I'm barely naked" in hopes of getting closer cuz you think something like that is romantic or whatever 24% (sometimes includes things like making him lunch when the guy already has his own source of lunch or something)
4. Cry like a bitch when after you get rejected bcuz it only took you one second to like or "fall in love" with mc but it still hurts you somewhat 70%
Anyway, I just needed somewhere to say this. I like this manga though. I really wanna see mc get revenge on the bastard.