Jin Enjouji is Momo's childhood friend and first crush. After his parents were hospitalized as a result of his house being haunted, Enjouji moved in with Momo and Seiko and transferred over to Momo's school. Enjouji comes off as being a very hyper-active young man who likes to express himself with dramatic movement and faces. He also has a habit of usually ending his sentences with strange verbal tics.

Spoiler

He got possessed by a mountain yokai called the evil eye. When he touches cold water the yokai comes out, when he touches hot water he is himself.