Ryoko works at a withered hot spring inn.She had a past of leaving her son behind.A college student traveling alone came to the inn.He was surprised to see Ryoko.Surprisingly, he was the son Ryoko left behind.She approaches Ryoko, saying that Ryoko has grown up as well, but she is yelled at by him, telling him not to face her mother, and leaves her room.In the middle of the night, when Ryoko was soaking in the hot spring, he came in.Two people surprised.However, he got aroused by her naked Ryoko and attacked her.Ryoko slapped and left her bathroom.After that, he secretly appeared in Ryoko's room, said that he had been lonely for a long time, and was sucking on Ryoko's breasts.