This game has a lot of good stuff! But I feel like the biggest thing it lacked was a "System B/secondary mechanic". You kinda don't do anything except just shoot and dodge and there's nothing really else to think about (though the spreadshot does add some strategy where it's better to get up close to do more damage on an enemy which is neat) or keep track of... And the fact that you can't even see your health despite the MASSIVE screensize feels bizarre. The game's biggest issue really is just the Aura Meter unfortunately. Like, it doesn't add anything "new" or even particularly fun to the average shoot em up gameplay loop, the only thing it changes is that instead of being able to shoot freely now you have to periodically press the shoot button and try not to miss, and it adds these downtimes where you can't do anything but are just forced to quietly dodge, which would be interesting if there was some kind of secondary mechanic like maybe grazing near bullets to rebuild your Aura or SOMETHING else you could think about while waiting, but since you don't all you do is just wait and then if you miss again you wait some more.
Some of the patterns also felt very difficult but in awkward ways-- The second section of the first stage with the guy that keps spawning eyeballs felt harder than most of the stages after, or at least tedious, since it felt like he had a lot of health and spawned eyeballs at a ludicrous rate. The part where the game "zooms out" was REALLY clever and actually made use of the screensize, but then it exposed a second issue which is the acceleration when you move around (which is a very odd decision for a precision based genre like a bullet hell) with no focus mode or way to slow down. The art and music are great and the final boss is awesome, though I admit I couldn't find much logic in the theming (besides the Aura Meter which was a hamper on the game's fun factor lol).
I'd say this is a really good _base_ for a game, but next time I'd try to think about the kinds of thoughts the player is/should be having at any given time-- Give the player something to think about if you're going to give them downtime through a mechanic like the Aura Meter.