This prequel takes place at the same time as the first episode of the TV series. Shinjuurou has been injured as Inga’s idol protrudes from his neck. As the story begins to unfold, more mysteries that were unanswered in the first eleven episodes come to light, and we learn the full story of the duo’s story.
(Source: Sentai Filmworks)
Alternative Titles: Un-Go: Inga-ron, UN-GO: Chapter of Inga, UN-GO episode:0 Inga-ron, UN-GO episode:0 因果論