Kazuya Hasegawa, an office worker, enjoys going to a massage parlor on weekends. On his way home from work, he stopped by a massage parlor called “Relaxation Yuka". The owner, Yuka, is beautiful, kind, and good at massaging, and she also offers sexual services. For Kazuya, it was a little reward and healing. One day, Yuka decides to take some time off from her job, and her friend Aya arrives to fill in for her. Kazuya is introduced by Yuka to Aya, who gives him a massage, and he becomes more and more addicted to her skill, which is as good as Yuka's. He also gets a taste of “body washing”. The story takes place a few weeks after the prequel[From official site]