The Head of the Social Club who is highly respected and feared. With the fact that most students are in debt to the Morimoto Financial Group and her sister is the headmistress, she practically controls the school and will do whatever it takes to get what she wants. When Takurō arrives at St. Arcadia, she goes to great lengths to make him a member of the Social Club and to make him her personal sex slave. She has also been shown to not be very intelligent since she apparently wrote the combination to a safe on the back of the same safe. In the third episode, she is kidnapped and raped by a group of male facility members lead by the vice-principal.