When Minako was 20, the man she was dating had a wife and child. When she became pregnant with a boy, he asked her to have an abortion, but she refused and disappeared from the man's sight, giving birth to Hiroaki alone. As she raised her son as a single mother, he began to resemble his father more and more, and every time she saw him, she was reminded of her old love. The two finally crossed the line, and from then on, they spent almost every night together...