What to say... Good luck with the game?
I mean, it doesn't matter to me if it is a bit grindy, but that you have to talk to the people until you get the conversation you need... To upgrade Rika to level 2 you can use Gwen if she is level 2... and how to get Gwen? For the Mother, Sister and Kay you get immediately a quest line, for the other girls it's like: Try your way through the game, eventually in four weeks you get the first Quest for them... if you are lucky.
And then there is the minigames, which are even at the PC hard enough so you need to get quite an amount of trys to beat them.
Will wait for future update and look where it's going.