[Shiraki Yuko] A Takara Eizo exclusive title! A friend of the son's frequently visited the house. This friend, raised by his single father, worked part-time to support himself while still in school. He was a responsible and mature young man, but one day his father suddenly collapsed from overexertion. The boy, Gen, broke down in tears, emotionally devastated. Seeing his suffering, Yuko gently comforted him and offered, "Until your father recovers, why don't you live here with us?" From then on, Gen helped diligently with housework, making Yuko wish her own son could grow up just like him. Unconsciously, she began to pour more affection onto Gen than even her real son. Seeing this, her son grew resentful and got into a heated fight with Gen. When Yuko stepped in to protect Gen, physically shielding him, her son stormed out of the house in anger. While tending to Gen's injuries, Yuko became aroused, and Gen, noticing, made a move on her. Yuko hadn't been intimate with anyone in a long time, and though her heart raced, she knew she couldn't cross the line with her son's friend. To calm things down, she gave him a handjob. But from that moment on, their mutual attraction only intensified. Alone together under one roof, with her son gone, the two gradually fell into a forbidden relationship, culminating in creampie-filled encounters.