In a corner of an office deserted by people, a secret S&M relationship is taking place... An OL who toys with a man who should be her superior, turning him into her office slave. "Hey, I'm tired, massage my legs for me. You love my sweaty legs, don't you?" Forced masturbation while being made to serve. The M-papa, who is being trained privately, is today also violated, defiled by his master, and vows to continue his service. A colleague who has been identified as having masochistic tendencies becomes the new slave of "Yuka"...