Yu-kun is called by his father, who tells him that dinner is ready. As he enters, he greets his father, who mentions that he'll be coming home late. The conversation shifts to Yu-kun’s studies, as he attends a prep school, and his mother, Kumiko-san, has been taking care of the household since his father’s remarriage. Kumiko-san, once an office worker at his father’s company, now lives as a homemaker, and the two have been living together for half a year.
But beneath the surface, tension brews. Yu-kun has been missing classes, and Kumiko-san is concerned. She wants to help him, but their relationship is complicated. She wants to give him the love he's been missing since his real mother passed away when he was young. She looks a lot like Kumiko-san, and that resemblance has made Yu-kun feel a connection to her.
As the story unfolds, the emotional and physical connection between Yu-kun and Kumiko-san deepens. Their interactions become more intimate, and the lines between mother and lover blur. Kumiko-san is not just a mother—she is also a woman who wants to be loved, and she’s not afraid to show it.
Yu-kun’s father, meanwhile, is unaware of the growing bond between his son and Kumiko-san. He’s focused on work and his own dreams, but he also wants the best for Yu-kun. However, the family dynamics are shifting. Kumiko-san is no longer just a stepmother—she is becoming a real part of Yu-kun’s life, and she wants to be more than that.
As the night progresses, the tension rises. The love between Yu-kun and Kumiko-san becomes more explicit, and the emotional weight of their relationship is finally released. They are no longer just mother and son—they are lovers, and their bond is strong enough to change everything.
