This is insanely fun, I still haven't completed it after 2 days (skill issue) but I really want to talk about it.
The main mechanics of the game go perfectly with the theme, I really enjoyed the fact that even if you lose against yourself you end up controlling the other you.
The art is super cute and the music gives it a very nice feel.
In one of my playthroughs I found myself stuck on the room to the right (with the otomos in the jars), they all exploded and I found no way out of the room, not sure if something else was supposed to trigger but after a few minutes of trying to interact with things I just refreshed the browser to play again.
Overall I love it and will continue to play it until I complete it, and then I'll start wanting a sequel :D