Jiji is Momo Ayase's childhood friend (and also unknowingly her first crush) whom he lost touch with after moving away. Years later, he enrolls into Kami High and reunites with her after he came to her grandmother Seiko Ayase for help to rid his house of the Evil Eye haunting him, which leads to him becoming the yokai's vessel. After the Evil Eye is kept under control by Okarun, Jiji becomes one of the few to lend his help to Momo and Okarun as they try to find the latter's kintama.