I think the best way of summing this one up is short but very sweet.
It's definitely the most polished game I've seen in the jam so far and will probably remain that way, with well-done menus, fantastic attention to detail, and an air of professionalism in everything. It's also the best use of the themes I've seen so far; they're implemented into the gameplay and in a way that makes a ton of sense. The music is excellent, the graphics are very nice... yeah, it's really hard to find fault here.
The mechanics there's less I can say about because I don't really play bullet hells. This one didn't make my eyeballs bleed which is good (bullet hells give me eyestrain, I have no idea why). They were decent, and like I said the use of themes was pretty cool. Scrollwheel aiming worked better than I thought it would, though I still didn't think it was great. I did, however, run into major issues with movement in the mouse control scheme. Mouse movement only felt vaguely correlated with character movement; it would lag and randomly speed up and slow down. I'm assuming this is a bug- I'm using Chromium Edge 89.0.774.54 if that helps track it down.
While I liked the VN-ish dialogue sections a lot more than I thought I would, they still felt excessively long and it was pretty intimidating to be introduced to all the mechanics at once. I think this would be less egregious if the game was longer overall, but I would have preferred a slower, steadier introduction interspersed with gameplay sections.
I can tell from all the dummied out stuff that this is an ambitious project. It's very short- honestly, really kind of a tease it's so short, it ends just as it gets going- at this point but there's a lot of stuff greyed out and laid out. I'm definitely looking forward to future releases!