I called for a "promotional girl," but it turned out to be a colleague from work... From today onwards, this woman is my unprotected, big-breasted sex toy. (Momozono Rena JUFE-435)

Exploiting my tacky colleague's weakness, I subject her to physical training and discipline! I called a "promotion girl" over to my place, but instead, it was my usually tacky yet mature colleague, Momozono Rena, who showed up. She begged me to switch her out, but since she was already there, I figured I might as well have some fun with her...