BE:FIRST's new single "Sora" is written and composed by SKY-HI. It also features the B-side song "BLUE." This edition comes with a DVD featuring "Sora -Music Video-," "Secret Garden -Music Video-," "Sora -Music Video Behind the Scenes-," and "Secret Garden -Music Video Behind the Scenes-" (subject to change). *This is a "PlayPASS" compatible product, which enables you to listen to and view the contents on a mobile device in addition to CD, DVD players. The record company has designed and optimized "PlayPASS" for the market within Japan and registration at "PlayPASS" site (https://playpass.jp/) available only in Japanese language, is required. They do not guarantee that it works outside of Japan.