Unification of Japan Gaiden: Yamazaki Ichimon 4

A series of resident disappearances occurs at a Kyowakai-owned apartment in Kabukicho, Shinjuku, home to many people with complicated backgrounds. Nakajima (Yoshimi Tachi) volunteers to investigate, and Tamura (Yoshiyuki Yamaguchi), uneasy about sending him alone, orders Saito (Katsuya) to accompany him.