Deluxe CD + DVD (NTSC/Region 2) version. The DVD contains a lot of contents that are a must-see for fans, such as live footage from a-nation and their past activities in Japan, as well as making-of footage from the cover photo shoot that was shot for this album. Box packaging. A photobook (36 pages), a trading cards randomly selected from six kinds, and application serial number (valid only in Japan) are enclosed. 2022 release. Red Velvet's first full-length album of all original Japanese songs. Out of the 11 songs, five new songs including the lead song "Wildside" are included. This is a "Sumapura Music" compatible product, which enables you to listen to and view the contents on a mobile device in addition to CD players. This service expires two years after the release date.