Demon Slayer: Kimetsu no Yaiba: Season 1
Tanjirō Kamado is the eldest of a large family, and since the death of their father, he has shared the responsibility of caring for them with his mother. One day, while he is away in town selling charcoal to provide for his family, he returns home to find them brutally slaughtered. However, Tanjirō realizes that his sister Nezuko is still breathing, although in poor condition.