Even though it was a weekend when his parents were away, his mother invited a friend over to keep an eye on him. With a strange aunt around, there was no way he could act freely. Naoya was disappointed that he would have to spend the weekend in agony, but the situation changed completely the moment Shino arrived. Shino was beautiful and voluptuous. She was a seductive woman, hard to believe she was his mother's friend. Naoya was excited by this unexpected turn of events. He was so excited that he couldn't control his erection and ran to the bathroom. However, he ran into Shino while she was peeing.