The fourteenth main entry in the Touhou series of vertical danmaku shooters.

Youkai are rebelling, and tsukumogami are turning up; no one knows what's happening, clouds are gathering, and a strong wind carries the sounds of a huge building. Gensokyo is full of the sounds of dissonance. The individual weapons of the three protagonists are starting to act oddly. It's their job to either take their weapons in hand and fight the youkai, or to cast their weapons aside.