Four years before Silent Parade (2022), Yukawa and Kusanagi investigate the murder of a writer after a video found in his possession piques Yukawa's interest.
Hitomi Takagi (Fumika Shimizu) and Akako Honda (Rena Matsui) are members of comedy duo “Akako to Hitomi.” The created the comedy duo about 5 years ago, but they are still not very popular. Everyday, they perform manzai to a regular audience in a corner of a small theater. One day, Hitomi and Akako catch a middle school student trying to steal Hitomi’s bicycle. Since then, their fate as a female comedy duo begins to change.