Cover art for the first home media volume of Hashira Training Arc, featuring Serpent Hashira Obanai Iguro (top) and Wind Hashira Sanemi Shinazugawa (bottom)
Demon Slayer: Kimetsu no Yaiba is a Japanese anime television series based on Koyoharu Gotouge's mangaseries of the same name. At the end of the third season finale, a fourth season covering the manga's "Hashira Training" arc was announced.[1] The fourth season, titled Demon Slayer: Kimetsu no Yaiba – Hashira Training Arc,[a] adapts from the 15th and 16th volumes (chapters 128–139) of the manga. It premiered on May 12, 2024, with a one-hour episode.[2][3] The season ended with a one-hour special, which aired on June 30 of the same year.[4]
The season follows Tanjiro and his allies as they enter "Hashira Training"; an organized regimen led by the Hashira to prepare them for the coming conflict against Muzan Kibutsuji, who continues to search for Nezuko and Kagaya Ubuyashiki.
The opening theme song is "Mugen" (夢幻, lit.'Dream'), while the ending theme is "Tokoshie" (トコシエ, lit.'Eternity'), both performed by My First Story and Hyde.[7][8]
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