A single special episode of Taishou Mebiusline: Chicchai-san, released in 2018 and classed as supernatural. The franchise draws on the boys-love game Taisho Mebius Line, set in Japan's Taisho era. That game centers on Kyouichirou Hiiragi, who leaves his country town for university in Tokyo, taking his family's sword for protection, and is caught up in a scheme by the Imperial army.