"Mugen" by MY FIRST STORY × HYDE has been confirmed as the opening theme song for the TV anime "Demon Slayer: Kimetsu no Yaiba Hashira Training Arc" which is scheduled to start broadcasting on Fuji Television nationwide in Japan in spring 2024.

"Mugen"
MY FIRST STORY × HYDE
［Lyrics/Music］ MY FIRST STORY, CHIMERAZ
［Arrangement］ MY FIRST STORY, CHIMERAZ


TV Anime "Demon Slayer: Kimetsu no Yaiba" Official Website
HYDE Official Website