The appears to be a niche home video release, likely part of a broader series of Japanese variety or physical performance titles (similar to others in the SCDV line ). Review: Secret Junior Acrobat (Vol. New)
This is usually distributed as a digital video or DVD-based release. Content Type: The series is classified as Junior Gravure scdv 28014 ni na secret junior acrobat vol new
Given the phrasing, scenario 1 or 2 is most plausible. The appears to be a niche home video
