Demon Slayer Box set

Tanjiro Kamado lives on a mountain with his mother and five younger siblings. One day, he goes down to the village to sell charcoal. When he returns the next day, he finds his entire family massacred. His sister, Nezuko, shows signs of life, and he tries to take her to the village to see a doctor—but she transforms into a demon and attacks him.

At that moment, a Demon Slayer, Giyu Tomioka, suddenly appears with the intention of killing Nezuko. However, she protects Tanjiro instead. Seeing something different in her, Giyu spares her and instructs Tanjiro to seek out Sakonji Urokodaki to train as a Demon Slayer and search for a way to turn Nezuko back into a human.