Renkonman is a human elementary school student and classmate of Harumi. He belongs to the Night Patrol, a group formed by Tsutomu, Supokon, and Gariben, where students venture into the school nightly to investigate supernatural phenomena, frequently encountering demonic attacks.

His personality includes effeminate mannerisms perceived by others as flamboyant or "tuntig," though his actual sexual orientation remains unconfirmed. He demonstrates attraction toward women. A notable character trait is his preoccupation with hygiene, particularly regarding toilet paper shortages, which triggers visible distress.

During Episode 10, Renkonman falls victim to a demonic incident causing extreme physical inflation. He is shown consuming excessive amounts of potato chips, engulfed by empty packaging. After the inflation subsides, he suffers significant weight gain due to continued overeating, appearing panicked and overweight in subsequent scenes.