Shizuka is a woman who has been trained by her boyfriend to be a submissive masochist. However, the excessive training leads to an unexpected evolution. "Please feel even better. I'll do anything," she says, continuing to stimulate his penis even after ejaculation. Unable to control herself, her boyfriend orders her to "go and do it with another man." The man, who met her for the first time, is initially pleased by Shizuka's hard work, but becomes a masochist due to her high level of slutty behavior. Can the men withstand the torture of this innocent woman?
