I'm a fan of bullet hell-ish games (and also a Touhou player) and one in 3D is a pretty good idea. The graphics were fine, but I have some suggestions to improve the game overall.
First of all (and you're not the first, I've been saying this for many, MANY 3D games in this event), I would love to be able to rotate the camera. The vision gets limited if I can't do that.
Second, spamming shots by clicking is gonna make the user's fingers tired eventually. This is a fairly hard game, and you have to expect that maybe the player is a tryhard gamer and he wants to play the run over and over again, until he beats it. For that kind of guy. if he could just hold the mouse button and keep shooting, it'd be so much better because his fingers wouldn't be fried at the end.
Finally, the player is hard to control. It seems like you made a rigid body with physics simulation, but for that kind of game I like using a kinematic so that his speed is constant and the player can control it better. I think this is necessary because the dodges here are very precise.
There are some other minor things, like invincibility frames that could help at playability if you were using them, and the soundtrack, it's by no means bad, but it just sounded unfitting (to be honest it's kinda fitting but a little sarcastic if you know what I mean)
Anyway, congratulations for this LD run. I hope I wasn't too harsh, but I believe that mechanics trump content, and with more polished mechanics this game has so much potential for LD. If you have the time and patience I recommend doing a post-jam version and publishing it separately.