Yuka lives with her son. Although she is introverted, she spends happy days with her kind son. One day, her son brought home his friend Yano. Unlike her son, Yano has a bit of a flashy aura. Yuka doubts if they are really close friends but feels an unexpected warmth towards him… They have dinner together, but after dinner, Yuka starts to feel strange heat and can't help but indulge in self-pleasure. Meanwhile, Yano is secretly watching her...
