Demon Slayer (Kimetsu no Yaiba) is a popular anime and manga series about a teenage boy named Tanjiro Kamado who becomes a demon slayer after his family is slaughtered and his younger sister, Nezuko, is turned into a demon. Set in early 20th-century Japan, the story follows Tanjiro as he joins the Demon Slayer Corps, an organization dedicated to hunting demons, to find a way to turn his sister back into a human and avenge his family. The series is known for its action, character-driven story, and stunning visuals.