: Preserving high-quality (MP4) versions of older K-pop performances and variety show appearances that are no longer easily accessible on official streaming platforms.

The name is most likely derived from promotional materials or behind-the-scenes footage related to the album's release cycle:

: Sharing "OT5" (One True Five) content from the group's peak era in Japan.

: Celebrating the bond between the members (Gyuri, Seungyeon, Hara, Nicole, and Jiyoung).