Demon Slayer is a popular Japanese anime and manga series created by Koyoharu Gotouge. It follows the story of Tanjiro Kamado, a young boy who becomes a demon slayer after his family is slaughtered by demons, and his sister Nezuko is turned into a demon. The series explores Tanjiro's quest for revenge and his journey to save his sister.
If there is a Season 4, it would be the continuation of the anime series, featuring new story arcs, character developments, and potentially more intense battles between demon slayers and demons.
This refers to a specific storyline or arc within the Demon Slayer series. In anime and manga, story arcs are narrative segments that focus on a particular set of events and conflicts. The "Infinity Castle Arc" suggests that the storyline may involve a castle with mysterious or supernatural properties. The specifics of this arc, including the characters involved and plot details, would be revealed in the episodes constituting this arc.