I do not understand the game.

[FrylockArgento]

What I understand least is the part of the match-3. what does each token? Drums, microphone, hearts, etc. Why do girls sometimes have a happy face, and other times an angry face? What is the heart bar used for, and how does it go up or down? When you win, what do all those stats you get mean? And most importantly, does it explain it somewhere in the game and I missed it, or do you just have to guess?

[Breizh Atao]

Same....

[Lazilar]

Once you get to the screen where you can pick an action/location to visit, you can click on each girl's face on the left side of the screen to see their stats. Each stat provides a different bonus and is linked to a shape in the match-3 game. The only shape not linked to a stat is the heart which I assume improves your relationship with the girl you're playing the match-3 game for. Hope that helps :)