Sonogo Goro returned home in low spirits after hearing his mother's friend was staying over. He didn't mind young women, but a middle-aged guest seemed uninteresting—an ordinary older woman, he assumed. But when he arrived home, he was met with an unexpected sight: the elegant, mature beauty Hotaru. Goro fell for her instantly, completely captivated. Overcome with excitement and tension, he couldn't sleep. Venturing out of his room for a change of pace, he accidentally discovered Hotaru pleasuring herself. In that moment, his desire surged uncontrollably. His cock hardened and sprang out as he moved toward her, desperate to have her. That single step would irrevocably change their relationship forever.