Story: Tenno's A... The daughter of a wealthy family member of the Tenno family. He behaved selfishly and was always feared by those around him. However, in the background of her becoming so, there is "loneliness" from a young age. Her mother was upset by her father's infidelity and went crazy. As a result, he committed violence on a daily basis. - She grew up being oppressed, but before she knew it, she became excited about slaps, punches, strangling, and whips. ・ Otokoto Rui ... A maid hired by the Amano family. Maternal, gentle and devoted. I have endured the violence of the past for a long time. Lesbian. At first, Rui makes a gesture as if she is in love with Noa, but later it is discovered that this was an act. - She was the child of Ruiha's father's mistress. Rui was poor. - She was bullied by her single mother. That's why I've always wanted to take revenge on my father and his family for abandoning my mother. And infiltrate the Tenno family as a maid. Waiting for the time of revenge. However... Knowing that loneliness, his plans are shaken ...