The July 2018 issue of Kadokawa’s Monthly Comic Alive magazine published the final chapter of Sakagaki’s Yōkoso Jitsuryoku Shijō Shugi no Kyōshitsu e √Horikita (pronounced “root Horikita”) manga on May 26, 2018. The manga is a spin-off of Syougo Kinugasa’s Yōkoso Jitsuryoku Shijō Shugi no Kyōshitsu e light novel series. The manga focuses on the character Suzune Horikita and tells a “what if” story. Shunsaku Tomose is credited with the original character designs.
Sakagaki launched the spin-off manga in June 2017. Kadokawa published the first volume on November 22, 2017, and will publish the second and final compiled volume on June 23, 2018.