“Demon Slayer” season 4 ended its “Hashira Training Arc,” and Crunchyroll announced it will release “Demon Slayer: Infinity Castle” as a trilogy of films to conclude the series.
The series is the biggest anime at the moment, but it is ending because the manga by Koyoharu Gotoge has ended. The anime just reached the final arc of the source material.
It is only 23 volumes, so it was always going to be short. The manga is popular because it always cuts to the chase and knows when to end things, despite its slow start.
The series is split into arcs that are released as episodes or movies. Ending the show with a movie trilogy feels right to capture incredible animation and end this great anime.