This track serves as the opening theme song for the fourth season of the anime series "Demon Slayer: Kimetsu no Yaiba".
The title Mugen (夢幻) literally means fantasy, but, maybe, this title and the lyrics can relate to the word "Mugen (無限)" that have the same pronunciation, but means "infinite", then come the relation with the Infinite Castle, and with the series.
This track serves as the opening theme song for the fourth season of the anime series "Demon Slayer: Kimetsu no Yaiba". The title Mugen (夢幻) literally means fantasy, but, maybe, this title and the lyrics can relate to the word "Mugen (無限)" that have the same pronunciation, but means "infinite", then come the relation with the Infinite Castle, and with the series.