Publishing company Kodansha opened an official website for an anime adaptation of Tsukasa Monma and Shikako's Manshuu Ahen Squad (Manchuria Opium Squad) manga on Monday. Monma and Shikako began serializing the historical crime manga on the Comic Days platform in April 2020. It was transferred to Weekly Young Magazine in September 2021. The series went on hiatus following the death of Shikako in November 2025, but resumed its serialization as per their wishes on October 5, with Tsurushima se...