"What's wrong? Calm down." Her son suddenly started caressing her, excited. Aika gently tries to calm her son down, but her kisses and caresses only get more intense. She can't resist her son's strength, who has grown into an adult body. Aika gives up on resisting and decides to wait for her son to satisfy himself, but... Aika gradually loses herself in the intense pleasure brought by his pursuit that doesn't stop no matter how many times he cums...