Hi!
This game looks beautiful and I'm really interested in it. We played it but didn't get it :( I played as the girl from the bottom floor, got some items and was able to "finish" the game. But from the person above perspective, seems that it doesn't end. Also, it's really cute that you can see what the other person is doing, but we couldn't understand what the mechanics of picking up the objects really is.
Also it's pretty cool that you were able to make a multiplayer game in a few days!