Early Taisho era. Yuu, born as the child of a mistress to the prestigious Toudou family, was oppressed and treated like a slave from an early age. In particular, Yuu's half-sister Nadeshiko pretended to be friendly with Yuu in front of Shinnosuke, who she had a crush on, but secretly bullied her. Yuu wanted to be free one day, but her wish was not granted as she could not abandon her mother, who was imprisoned in a confinement room. One day, her mother died in a fire of unknown cause, and Yuu went to help her, but was never heard from again. –Seven years later, Yuu, who was thought to have disappeared, has grown up to be a beautiful new person, changes her name to “Haruhi,” and returns to the Toudou family, where she begins her revenge with the memory of her murdered mother in her heart.
