残響散歌
The 26th cover single by Japanese singer-songwriter Yugo Ogura.Cover by sing and play the guitar. Aimer's single released by SACRA MUSIC on January 12, 2022. This song has been used as the OP theme for the TV anime "Kimetsu no Yaiba" Yukaku Hen "". Prior to the CD release, "Zankyosanka" was released as a digital single on December 6, 2021.