By Volume 4, Team Skeet had abandoned the flat lighting of their earlier work. They adopted and natural audio capture. For the "Top" tier viewer, audio synchronization and 60fps video are non-negotiable. Volume 4 delivered exactly that.
The "swap" trope relieves the tension of monogamous fantasy. It allows the viewer to imagine two distinct dynamics (Sister A + Friend B, Sister C + Friend D) simultaneously. The "Top" iteration of this fantasy provides . In Volume 4, because the "Top" scene ends with group involvement, the viewer doesn't have to choose which pairing is better—they get both. sis swap 4 team skeet top