As the illicit relationships between Misao, Ryouto, and Kazushi intensify, Ryouto reveals a terminal illness and orchestrates a blindfolded encounter to push Kazushi and Misao together. After discovering each other's identities during the act, the mother and son embrace their forbidden attraction. Years later, following Ryouto's death and Misao's divorce, Kazushi and Misao live together as lovers and start a family of their own.