A girl with a cursed inheritance hunts demons with a sword that talks back to her. The Youki helping her isn't what he seems, and neither is the brother hunting her, every answer about her bloodline costs her something. This OVA moves like it knows exactly what it is: a small, sharp story about power you never asked for, told in two episodes that don't waste a frame.

Rasu lives in the Floating Castle, home to those who fight demonic beings. Chosen as the wielder of the Demon-Breaker, a strong-willed and bloodthirsty sword, she is sent to rescue the princess of Gandia, who has been taken by a wicked noble demon named Aju. Along the way she gets help from Anshu, a smooth-talking youki who claims to be on her side and who has a basic color other youki lack. Her younger brother, drawn toward the demon world, stands in her way, seeking the golden eyes she inherited from their father, the Golden Youshu. Beyond the demons, the mission draws Rasu toward the dark conflict of her own origins in this two-episode fantasy OVA.