Ayane is a career-oriented woman, but her true goal is to marry a rich man. She has a perfect boyfriend, but he won't do more than kiss her. That makes Ayane depressed because she thinks she's not attractive as a woman. One day, a handsome boy named Otoya moves into her house saying, "I'm your brother from now on!" Otoya turns out to be the son of the president of the popular fashion brand! Ayane is disturbed by her step brother moving in with her, but she lets him because he cleans her house and cooks for her. However, Otoya carries Ayane out of the bathroom after she fainted, takes pictures of her naked body, and starts caressing her breasts. Otoya tells Ayane, "If you want to marry a rich man, I'll tell you how to do it right," as he fondles her body...