Very interesting game, I love the art, the game loop and the concept in general. I suppose the theme is applied with the ordinary day cycle - wake up, cook, eat, work, which is good enough for me :)
You have done also an outstanding job to guide the player of what he needs to do. I got a bit confused with the portal though and I haven't had time to play it a bit more and explore past the 15th day, but I might come back to it later as it was really engaging!