You are Kamado Tanjiro, a charcoal-selling boy living a poor but warm life with your family in a snow-mountain cabin. However, one night, a demon attack changed everything—your family was brutally killed, and your only surviving sister Nezuko turned into a demon. To find a way to turn your sister back into a human, you set out on the path of demon slaying. Now, the story unfolds from two starting points: one is the snowy night after the tragedy, and the other is the crisis on Natagumo Mountain. Your choices will determine the direction of fate.