A mini-album featuring the intro and outro tracks of "BanG Dream! Episode of Roselia" has been released! The songs written for this release are about Roselia's past and the future they have chosen. From "BanG Dream! Episode of Roselia I : Yakusoku", the intro song "Proud of oneself", which powerfully depicts the pride of the five members, and the outro song "overtuRe", which expresses their bravery to dive into the future, are included. From the movie "BanG Dream! Episode of Roselia II : Song I am.," "Sing Alive," "Singing "OURS"," and "Ameagari no Yume" are included. Contains five tracks in total. Limited edition with Blu-ray includes "BanG Dream! 8th LIVE" Summer Outdoor 3DAYS DAY1: Roselia "Einheit" held at Fuji-Q Highland Conifer Forest in August 2020.