Ok, finally i'm playing this. Well, i'm kind of disappointed right now. I'm sure (or at least i hope) that future expansions will add some features like dates and other stuff. But right now is a lot more limited compared to the final version of the original koikatsu. Even with a night time and an entire island as a setting. The game can be saved it only need a decent expansion.
Anger was a minor gameplay mechanic in the original koikatsu. It just needed an apology and everything was fixed. There is no blackmail/hatesex mechanics in this game, so anger is kind of pointless.I just noticed that this game completely removed anger feature that was a thing in the old koikatsu. Basically you can just start spamming lewd chat and groping the girls without needing to care about possible bad outcome. Even barging to toilet/bath/changing room will only make them run and they can talk to you normally right after the ran a couple of maps. It also means that breakup is also impossible (i think?)
I wonder if it's even possible for the modders to add that feature back into the game. I bet it's gonna be tough.