Tanjiro Kamado is living a modest but blissful life in the mountains. One day, when he returns from selling charcoal, he finds his family slaughtered in pools of blood. He rushes down the mountain with the sole survivor, his sister Nezuko, on his back.
It is the Taisho Period in Japan. Tanjiro, a kindhearted boy who sells charcoal for a living, finds his family slaughtered by a demon. To make matters worse, his younger sister Nezuko, the sole survivor, has been transformed into a demon herself. Though devastated by this grim reality, Tanjiro resolves to become a “demon slayer” so that he can turn his sister back into a human, and kill the demon that massacred his family. A sorrowful tale of siblings in which the fates of humans and demons intertwine… begins now!