Demon Slayer: Kimetsu no Yaiba Infinity Castle

Tanjirou Kamado's life changed after his father's death, with the responsibility of supporting his family falling on his shoulders. He lived a simple life on a remote mountain with his family, which allowed them to maintain a relatively peaceful existence despite their poverty. The discovery of demons, as revealed by a stranger, was the catalyst for a chain of events that would alter Tanjirou's life forever. His family's massacre, with only his sister Nezuko remaining, prompted him to join the Demon Slayer Corps in a quest for revenge against the demons responsible and to preserve what humanity remains in his sister.