There is some grind initially, once you progress midway it's free flowing.The game is good, I really wanted to play, but it it's very grind.
For what I seen in the tutorial it looks like we need to exceed 80 points more or less with each girl, point by point. It's very grind and very exhausting.
Shame, cause the game looks really good otherwise.
Sorry, I said grind, but I don't know if that is the right word, I'm not a english speaker.