Demon Slayer: Kimetsu no Yaiba - little sister

Demon Slayer: Kimetsu no Yaiba - During Japan's Taisho Period, a gentle young boy named Tanjiro earns a living selling charcoal, until his family is brutally slaughtered by a demon. To make things even more dreadful, his sister Nezuko is the only survivor, but has been turned into a demon. Despite being broken by this harsh truth, Tanjiro vows to become a "demon slayer". His goal is to restore his sister's humanity and exact revenge on the monster who slaughtered his family.