She couldn't be satisfied with ordinary sex. The fact that normal intercourse left her unfulfilled was proof she was a true masochist. One day, while complaining to a bartender at her regular drinking spot about her bad luck with men, she overheard a conversation between Arisue and Chiaki sitting next to her at the counter. The two men were the kind who spent their nights searching for women eager to be disciplined. Lured by their words, she decided to follow them, no matter how forcefully she had to be pulled. From there begins a story that reveals her deepest desires and impulses.