It is set in the same world as Stray Cat Strut and follows a new vanguard Freya who gets thrown into a situation where the only way to achieve victory is to sacrifice her sanity. This leaves her irreparably insane with the constant desire to fight and to kill.

The story is not just about fighting however and is also about character interactions and even GL romance. As well as Freya's psyche and how she interacts with the world around her, she is definitely not a completely morally correct character.