I'm sorry... ~When a married woman hungry for stimulation crosses the line~

Sayuri, a wife, lives a simple and ordinary life with her husband, Ichiro. One day, on her way home from shopping, Sayuri happened to meet Sakura, who she had attended a seminar with at university. Sayuri is asked by Sakura, ``I need your help with something,'' and ends up working with men at a members-only social club. Sayuri gets drunk on unaccustomed alcohol, and the comfort of being teased by men begins to break her control. She was forcibly taken to the bathroom and had her lips taken away...