Wow that was harder than I expected! I got the 1st ending fairly quickly, but took many tries to get the second ending. I think that the hitbox for the familiar is larger than the star seems to suggest. (But I'm not great at bullet hell, so take that with a grain of salt)
The artwork was nice, and I enjoyed seeing the two endings. It's a short game, but it's a game jam so that's to be expected. I could see this being expanded if you added more story and enemies to encounter. Nice work!