Tanjiro came back home after selling all the charcoal to the town. He sees all of his family members dead devastated he stood there shocked and saddened. Suddenly a figure appears before Tanjiro. This figure is the spirit of Yoriichi Tsugikuni. Yoriichi sees himself in Tanjiro, A man of no worth. Yoriichi believing he failed to protect the family, decided to make him his successor. Tanjiro accepted and he would be trained by the greatest demon slayer to ever live. However as Tanjiro was about to bury his family he noticed one lived. His baby sister Raya.

Instead of Giyuu tomioka finding Tanjiro, kyojuro Rengoku, the flame hashira, does. Kyojuro see's potential in Tanjiro and because he has no successor he trains Tanjiro in the art of flame breathing. Nezuko will be dead(by tanjiros hands). Sorry not sorry(?)