I see, some people would love to see some "light romantic route" with all the girls, where MC is like "Yoko, you was an insufferable bitch, but I forgive you and will not use the situation, will leave you horny and go away" and she is like "oh, MC-kun, I love you and will never cross you again, kiss me".
Well, it seems MC personality is kinda hardcoded and the game is kinda dark despite of karma choices. Maybe the author will change choices someday with further karma mechanic evolution, maybe not - either is fine by me.