Excellent gameplay! I thought it was very tense, especially as the patterns are above the level that I as someone with only a few hard 1CCs can normally sight-read, but you didn't punish the player appreciably for getting hit, so it seemed like you could basically decide how you personally wanted to accept damage taken and change the difficulty based on "vibes," I guess? And I loved the way the patterns worked, and especially how much variety there was in the patterns given how little dev time there was! The writing was also quite charming, and I really appreciated the callback to the reisen sprite from kotohimebook.
Out of the jam games I've played thus far, this might be my favorite, and I expect it'll stay pretty high up there. My one complaint is probably just that I couldn't remap my controls; I'm a shift/z/x person through and through. But a and s weren't too far off, so i mostly got used to it, lol.