Yashiro Isana (伊佐那社, Isana Yashiro) is a male teenager who attends Ashinaka High School. He is accused of being the "evil" King, known to have attacked and killed Tatara Totsuka.
Yashiro is an easy-going and extremely charismatic person. He often uses his charisma to help him out of difficult situations, such as tricking Kuroh into believing that he has a younger sister. Nonetheless, Yashiro is able to get along with almost everyone, whether it is people or animals or robots.