Very interesting concept, I really liked the character design and the bullet hell patterns, not to mention the artwork at the end. One thing that I'm not entirely sure was on purpose is the fact that the bullets were disappearing before reaching the bottom of the screen, so I had kinda of a safe spot which made the game a bit easy. Also, I wish I could hold the click button to continuously fire bullets.
Other than that, I had fun getting to the end and I think the atmosphere of this game is something new and captivating - the sinister monsters and slow bullet patterns, along with the eerie music creates a very special mood. Well done!