The otaku Solan Takeshi was playing the switch game Demon Slayer: Kimetsu no Yaiba at home, and unexpectedly found himself traveling through time and space to the world of (Demon Slayer: Kimetsu no Yaiba) during the Warring States Period in Japan. As an anime fan, Solan Takeshi was familiar with the original story of (Demon Slayer: Kimetsu no Yaiba), and his appearance made him... Many events in the original story have been changed. In this journey, Takeshi Solan and Tanjiro established a deep friendship. Takeshi Solan turned into a ghost during a mission and became Tanjiro's ghost teammate to fight side by side, embarking on the goal of destroying the King of Ghosts, Mutsuji Muzan.
