Ruby Tōjō (橙条 瑠妃, Tōjō Rubi) is a witch from the Human World. She resides at Yōkai Academy as the board chairman's aide and continues to work for him in the second manga serialization. Despite not being an official student, she receives permission to become a member of the Newspaper Club as an adviser. The anime omits the presence of her master or the inclusion of her parents, drastically changing the events surrounding her, including the reasons behind her return. Despite being an advisor, she does not give orders, being one who prefers to rather take orders and do as she's ordered to do.