How do you play?

[Anba-sama]

I'm not seeing much in the way of controls for this game. I don't even know if there's a menu, and I don't know what I'm supposed to do.

[American Dove Mitten]

This is probably a very late reply

but for anyone else. Think of this game as a walking simulator. Just visit every location and go to sleep. Repeat until something happens (hard to miss) I think it was designed as experience, not a puzzle game.

Don't try to look for items or puzzles. Game will interact for you as long as you visit all locations.