When I listened to the voices of the fans on the Mixtape, which summarizes GRow's past songs, many of them said, ``I want to hear this song, which has already been canceled,'' so the release of this work was decided. In addition, songs that have been distributed in the past are also included in this work, and it is an indispensable work for knowing GRow in the future. The jacket was created by GRow himself, and expresses the message of "heart" and "duality of black and white" that can be put into this work.