What a blast, your game is truly stunning, and I just loved the hand drawn aesthetic. It added a wonderful 'vibe' to the game.
I would just suggest adding some sort of difficulty slider, because I really struggled with the game, but that might be because I'm normally quite bad at games.
Nether the less, for a game made in 7 days, well done. Even though it was hard, I really enjoyed it. Congrats! :)