Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi) receive a request from their now-retired old patriarch, Mikami (Eiichi Furui) regarding harassment by the Chinese mafia on his ward, Oomiya Hayato. While Himuro and Tamura investigate, the Yamazaki Family kill time by dealing with merchandise fraudsters, YouTube streamers, and holding a seance to possibly consult the dead ...? Originally a 16-part "workplace comedy" online sketch series hosted on Rakuten TV, "Hiragana Ichimon" was released as a full movie cut on other platforms such as U-Next, while Netflix Japan retained the 16-part cut.