Due to an explosion, Su Cha accidentally traveled to the Beast World and became a vicious female supporting character, who will add bricks and tiles to the relationship between the male and female protagonists. Ha! What a joke, it would be strange if she followed the plot! What if the female protagonist doesn't fall in love properly and always provokes her? She doesn't mind being more vicious and making the plot more broken. Beating the female protagonist group, making delicious meals, treating patients and farming is her only goal. In order to change her fate of being attacked by the villain, Su Cha cured the villain's legs, detoxified the villain, and fed the villain with good food and drink. Just to exchange for a condition from the villain, not to kill her, but the villain wants to pledge his body. "A Cha, my tail, do you want to touch it?"