Touhou fan game in Go

This is a little fan game of Touhou (a bullet hell series by Team Shanghai Alice). It's written in Go programming language using Pixel for rendering and Cirno for creating hitboxes. It contains 2 non-spells and 2 spells. I used Nue as a boss because she's the only character whose sprite sheet I managed to find (at first I wanted Clownpiece though). The only graphics drawn by myself are bullet spri…