The track by the underground music circle 25時、ナイトコードで。 (25ji, Nightcord de.) can be downloaded as an MP3 or high-quality AAC through several official retailers and digital music platforms. Official Download & Streaming Options
: A reliable Japanese digital store for downloading individual 25ji tracks for both iPhone and Android.
: Commissioned from the artist Picon for the Project SEKAI event "Mirage of Lights".
: Individual tracks from the Kanade Tomosu Sora/Saisei single or SEKAI ALBUM vol.1 are available for direct MP3 purchase.