It's been announced that LiSA will be in charge of the opening and ending themes for 'Demon Slayer: Kimetsu no Yaiba Mugen Train Arc' premiering on October 10, and Aimer will sing the opening and ending themes for 'Demon Slayer: Kimetsu no Yaiba Entertainment District Arc' starting on December 5.

The opening theme for the 'Mugen Train Arc' will be "Akeboshi," and the ending theme will be "Shirogane." Both songs were written, composed, and arranged by Kajiura Yuki, who was also in charge of "Homura," the theme song for 'Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train.' The two songs will be released as LiSA's double A-side single on November 17. Prior to the single's release, "Akeboshi" will be available for download from October 18. 

Meanwhile, the opening theme for the 'Entertainment District Arc' will be "Zankyo Sanka," and the ending theme will be "Asa ga Kuru." These two songs will be released as Aimer's 20th single on January 12.