Yuna, struggling with her overwhelming desire to be with the one she loves, defies her surroundings' opposition and marries a man with a child. As expected, her stepson Kazuya is not warming up to her, and she faces daily hardships. One day, she unexpectedly walks in on Kazuya masturbating. Upon questioning, she learns that he is still a virgin and unfamiliar with women. While she thinks it shameful for a man, she also sees it as a golden opportunity to bond and takes a bold step.
