STAR-825 Masami Ichikawa: A beautiful sports instructor is forced to sweat at work, and is drugged with aphrodisiacs for endless pleasure and orgasmic sex.

Masami, a new trainer working at a certain gym, is intrigued by a special drink made by a sports doctor and decides to try it. However, it turns out to be a drink containing an aphrodisiac with arousal effects! Although she tries to control her burning body with reason, her reason gradually collapses. Like a horny bitch, she craves dick, becomes addicted to the aphrodisiac, and devours the bodies of the male members, climaxing repeatedly!