A few decades ago, she was raped by her husband's boss. Shortly after, her husband suddenly passed away. In the midst of rock bottom, she conceived an unfortunate child, Mio, and raised her with a sense of responsibility alone. Gradually, she began to feel happy. Mio was successful in her job search. She was overjoyed to see her child leave the nest, but one day, Mio's boss was also there to attend the memorial service for her deceased husband. A nightmare struck her again. "It's been a long time," she heard that familiar voice. She never imagined that the man who raped Kana was her daughter's boss...