I'm a shy guy, dating Mina while dealing with the mischievous Rio. Our relationship takes a sudden turn when Rio starts picking on me, subjecting me to unreasonable electric massages until I climax. This incident reaches Mina, who confronts me about it. Forced to admit the truth in front of her, I'm suddenly overpowered by Rio. "Hold Mina down!" Rio shouts, and my punishment begins. Rio, a skilled technician, puts me through relentless electric massage torture, and I climax helplessly. Even Mina is pinned down by Rio and subjected to the same electric massage. Rio declares that anyone who climaxes must break up with me. After enduring endless electric torment, I'm forced to admit, "I'm Rio's underling." This is the fate of a shy guy, humiliated before the woman he loves.