Since her husband died in an accident, her mother, Natsuko, has been raising her son Taichi single-handedly. Although her love for her husband did not fade, her body grew more and more frustrated by the day. One day, she notices that her Taichi looks exactly like her late husband. And when she meets a naked Taichi in the dressing room, she finds out that her cock is exactly the same, and she finally does her forbidden action.
