A gorgeous analog disc containing the theme song "Gurenge" from the TV anime "Demon Slayer: Kimetsu no Yaiba" and the theme song "Homura" from the theatrical feature of "Demon Slayer: Kimetsu no Yaiba: Mugen Ressha Hen"! The A-side contains 4 songs from LiSA's 15th single "Gurenge", and the B-side contains 4 songs from LiSA's 17th single "Homura", for a total of 8 songs.