Office lady Erina is in love with her section chief. She was once a victim of rape during high school, leaving her with severe fear of men. She still remembers clearly that the assailant had a large, noticeable bruise on his right shoulder. Despite carrying this trauma, one day she ends up staying late alone with him, and their relationship gradually grows closer. She begins bringing him homemade lunches every day, and when he invites her over with the promise of fine wine, she accepts and visits his apartment. There, they have passionate sex, and Erina sincerely opens herself to him. However, she suddenly notices a large bruise on his right shoulder—the same mark as her rapist's—and his demeanor instantly changes. She is raped again. From that day on, Erina's life becomes an endless cycle of being forced to submit.