The protagonist, Merucha, is an ordinary noble lady with a fiancé. Both attending the same aristocratic school. However, a woman who claims to be the heroine suddenly appeared and forced her to become a bully, saying, “I want to capture your fiancé, so bully me!” “If you don’t obey, the cute cat will pay for it.” From that day on, Merusha became a villain, and her days of bullying the heroine started, all events according to the heroine’s instructions. “How silly, I’m too embarrassed… I have to bully the heroine because of a stray cat… “ Merusha doesn’t have friends. Only a cat and a priest she can talk to … and her fiancé… she would gladly gift him to the heroine. The cat is more important!