Living in a house while her husband is away on a solo work assignment, stepmother Yukari shares the home with Yoshio, her husband's stepson. Recently, Yukari has begun to see Yoshio as a romantic partner, but she cannot express these feelings. Meanwhile, Yoshio also harbors deep emotions for Yukari, fantasizing about her being taken by other men and becoming increasingly tormented by his desire. Eventually, Yukari becomes aware of his feelings, and a new, intense connection begins to form between them. This work presents a dramatic story exploring familial bonds, illicit desires, and inner turmoil. Follow the unfolding relationship where love and lust intertwine, and discover how their forbidden bond ultimately evolves.