Some singles are included for the first time on the album, such as "Kioku no Kage" and its coupling song "Asobi ni Ikou", which were previously released in 2016.

Ikemori's solo single "Another Life" will be included in Deen's album for the first time since 2001 release.

[2][3][4][5][6] First press release will include 5th additional CD "Premium Disc" with eleven original songs by artist which composed and written for Deen, included Miho Komatsu, Seiichiro Kuribayashi, Tetsuro Oda, Wands and Zard.

All of these songs were previously released in their compilation album "Deen The Best Kiseki" (with exception of Zard).

A special website "Deen Chronicle" was launched on 12 January with short commentary on each single.