Idaten is a pure-hearted young Makemono (demon-beast) surviving the apocalypse within the Urotsukidōji saga. He joins the group of survivors, including Amano Jyaku, Buju, and Himi, journeying towards Osaka. This perilous trek forms a core narrative in *Chōjin Densetsu Urotsukidōji: Hōrō-hen* (Inferno Road), as the group seeks to confront the Overfiend and fulfill their destinies.

During the journey, Idaten develops a nascent, unfulfilled romantic attraction towards fellow survivor Himi. His role remains integral to the collective struggle. Idaten's documented presence focuses exclusively on this journey, with no elaboration on his pre-apocalyptic background, character development, backstory, or resolution provided in the available franchise media.