I really enjoyed the art style. Also, I thought puzzle design was clever, but got stuck for a while on the equation. I love the time baby!
In terms of constructive feedback, I think there was a bit of rough English translation here and there. Also, the least "fun" part of the game is walking from place to place and there is quite a bit of that in between puzzles (which are the highlight)
Regardless, I really enjoyed the time I spent with this game.