Ryoko works at a rundown hot spring inn. She has a past where she left her son behind. A college student traveling alone arrived at the inn. He was surprised to see Ryoko. It turned out he was the son she had left behind. Ryoko was also surprised and said, 'You've grown up,' as she approached him, but he shouted at her not to act like his mother and she left the room. Late at night, while Ryoko was soaking in the hot spring, he entered. The two were startled, but he became excited by Ryoko's naked body and attacked her. Ryoko slapped him and left the bathroom. Later, he sneaked into Ryoko's room, saying he had been lonely all this time, and started sucking on her breasts…
