Daisuke stays at his aunt Shizuno's house in Tokyo while job hunting. Shizuno is always kind, and Daisuke has long admired her. One day, while she is having lunch, Daisuke feels strangely restless. Noticing his unease, Shizuno gently says, "Let me see," and moves his arm aside—revealing his erect cock, something she hasn't seen in a long time. In that moment, struck by her nephew's maturity, Shizuno feels both surprise and joy, and begins guiding him through his sexual awakening. Shizuno's warmth and affection deeply stir Daisuke's heart.