Symbolic Japanese Rope Bondage
There’s not enough bondage in this Japanese rope bondage chest harness rig to actually restrain the pretty naked lady, but it’s enough to symbolize that she’s tied up, I guess, and it certainly does draw attention to her attractive breasts:

Photo is apparently from publicity for the movie 変態乱れ床 (machine translates to something like “Where is the Perverted Disorder?”) from director Mamoru Watanabe, according to the June 1978 issue of Cinema Spot magazine. The only plot summary I could find machine translates to “A couple who have reached a stage of boredom suddenly transforms! A chaotic and wild affair.”
Elsewhere on Bondage Blog:

