Tougen Anki: Legend of the Cursed Blood (桃源暗鬼, Tōgen Anki) is a Japanese manga series written and illustrated by Yura Urushibara [ja]. It has been serialized in Akita Shoten's shōnen manga magazine Weekly Shōnen Champion since June 2020. An anime television series adaptation produced by Studio Hibari aired from July to December 2025. A second season premiered in October 2026.