Yoko (Rumi Mochizuki) transfers to a major local real estate company to look after her parents, and quickly rises to the position of branch manager. She is beginning to get tired of her life that has been all about work. At that time, she is asked to mentor Izumi, who is mid-career. She begins to trust Izumi, who is earnest and hardworking, and they end up having a relationship. Overwhelmed by the pleasure she has not experienced in a long time, Yoko passionately desires him. However, she cannot bear the fact that their relationship is a secret that she cannot tell anyone about.