Kobayashi and Inoue are trapped in the underground channels as a result of Twenty Faces' maneuvering. Worried about the officers searching elsewhere in the channels, Inoue tells Kobayashi to escape and warn them that the map they were given is fake.

Akechi is relaxing at a spa to relieve the exhaustion of his recent cases. Nakamura asks him about his history with Twenty Faces, and Akechi begins to recount the trauma of his youth.