The Manga Begins with Demon Slayer: I'm Really Weak

On dying in the original world and surviving in another world Mu Chen said: weaken, the weaker the better, be cautious, the more cautious the better As a result, Mu Chen was given a title by the ghosts: the Great Demon King who misunderstood weakness. From then on, the weakest swordsman appeared in the world who could kill every ghost he saw. Wuxian: "Don't come over!!" A very cautious brave man: "This person is more cautious than me." The reincarnation of a certain demon king: "..., Is there anyone stronger than me?" Mu Chen: "Everyone, I am really weak!!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.