Absolutely love the idea of a turn-based bullet hell game! My favorite things here are the feel of the dash (particles & sound), and I think you did great with the art style & graphics too. Obviously this is wearing its Undertale influence on its sleeve, but I do feel like the JRPG combat on our turn is a bit out of place in what is otherwise an action roguelike with more combat-focus rather than narrative focus. I don't mind pausing, but I think it would be cool to have our attacks embodied in the environment still, so maybe something like aiming all our magic projectiles during our paused turn, and then having the enemies try to avoid them? Or maybe forgoing the pause and making "turns" more a push and pull between bullet hell & bullet heaven style gameplay.
Awesome submission, and I hope you'll keep working on it!