Prequel film of UN-GO telling the encounter of Shinjuurou and Inga.
- Other Title: Un-Go: Inga-ron, UN-GO episode:0 Inga-ron, UN-GO episode:0 因果論, UN-GO: Chapter of Inga
- Status: Completed
- Sub/Dub: Anime Dub
- Anime Type: Movie
- Genres: Mystery, Supernatural, Fantasy, Horror, Police, Seinen, Thriller, Animation
- Characters: Inga, Yuuki, Shinjuurou
- Score: 7.55
- Rank: 1543
- Popularity: 3352