It is the Taisho Period. Tanjiro Kamado is living a modest but blissful life in the mountains with his family. One day, when he returns from selling charcoal in town, he finds his family slaughtered in pools of blood after a demon attack. Tanjiro rushes down the snowy mountain with the sole survivor, his sister Nezuko, on his back. But on the way, Nezuko suddenly snarls, turning on Tanjiro.
Tanjiro Kamado, a young man with a gifted sense of smell, leaves his family in their mountain home and carries coal to a nearby town to sell. They have struggled financially since the death of the father but are happy. Tanjiro helps other townspeople and it is late when he leaves.
When Tanjiro returns home the following morning, he smells blood and finds his entire family has been massacred by a demon, except for his younger sister Nezuko. Tanjiro tries to take her to the town for medical treatment but she wakes and attacks him, having been contaminated by the demon's blood, now a demon herself. Giyu Tomioka, a demon hunter, arrives and attempts to decapitate Nezuko, only for Tanjiro to pull her out of the way. He pleads with Giyu that Nezuko would never harm anyone, but Giyu knows better. A hungry demon eats anyone, even its parents and siblings. Tanjiro says he will cure Nezuko, but Giyu states the contamination is irreversible. Tanjiro attempts to attack him but is knocked unconscious. Nezuko runs to Tanjiro and Giyu believes she's going to eat him, only for her to defend him. Surprised, Giyu disables Nezuko instead of killing her.
After Tanjiro wakes, he tells him to see a man named Sakonji Urokodaki at the foot of Mt. Sagiri and to say Giyu sent them. He also warns Tanjiro to make sure Nezuko is never exposed to sunlight before vanishing. The Kamado family are buried and Tanjiro and Nezuko leave hand in hand.
Characters in Order of Appearance
- Tanjiro Kamado
- Nezuko Kamado
- Kie Kamado
- Shigeru Kamado
- Hanako Kamado
- Takeo Kamado
- Rokuta Kamado
- Giyu Tomioka