When Chen Kun was about to die, he traveled to the world of Demon Slayer. The body's predecessor: Tokitou Ichiro, signed a contract with Chen Kun under the witness of the gods. He has only one request for Chen Kun, which is to protect his younger brother Muichiro Tokitoru.
But Chen Kun, who had read the entire original work of Demon Slayer, was not satisfied with this. He tried to save the people who had sacrificed their lives in the original work: his eldest brother Enbashira Purgatory Anjurou who fought until the last moment to save the train passengers, the Insect Hashira Butterfly Ninja who used himself as bait to avenge his sister, and many, many kind-hearted people...
However, Chen Kun, who traveled through time, discovered that Ichiro Tokiro's body had lost his right hand, so practicing the breathing method could only achieve twice the result with half the effort. So, he looked through the Ubuyashiki family's collection of books, and was surprised to find several volumes of Taoist books from the Eastern Continent. Although in this world of high martial arts and low demons, Taoism's ability is greatly limited, it is still much better than being a useless person and watching the plot progress.
So, can Ichiro, who has learned the mysterious Eastern Taoism, change the ending of Muichiro's tragic death through his own efforts? Or go one step further and save more people while killing Wu Ke?
(Looking at the original work, I was severely injured by a knife. I want to create a world where Muichiro grows up happily)
