Since his father’s death, the burden of providing for the family falls on Tanjirou Kamado’s shoulders. Despite living in poverty on a remote mountain, the Kamado family is able to enjoy a relatively peaceful and happy life. One day, Tanjirou decided to go down to the local village to earn money selling coal. On the way back, night falls, forcing Tanjirou to take refuge in the house of an unknown man who warned him of the existence of flesh-eating demons that lurk in the woods at night.
When he finally returned home the next day, he encountered a horrifying scene – his entire family had been massacred. Worse still, the only survivor is his sister Nezuko, who has been transformed into a bloodthirsty demon. Destroyed by rage and hatred, Tanjirou vows to avenge his family and be with his only remaining brother. Along with the mysterious group calling itself the Demon Slayer Corps, Tanjirou will do whatever it takes to destroy the demons and protect the remnants of his beloved sister’s humanity.