The fourth season of the Demon Slayer: Kimetsu no Yaiba anime television series is based on the manga series Demon Slayer: Kimetsu no Yaiba by Koyoharu Gotouge. At the end of the third season finale, a fourth season covering the manga's "Hashira Training" arc was announced. The fourth season, titled Demon Slayer: Kimetsu no Yaiba – Hashira Training Arc, adapts from the 15th and 16th volumes of the manga. It premiered on May 12, 2024, with a one-hour episode. The season ended with a one-hour special, which aired on June 30 of the same year.