Mizukawa Aikizuna is a 34-year-old urban and elegant married woman. He lives on the 36th floor of a 40-story tower apartment with a view of Minato Ward's city center. His husband is an IT entrepreneur. He has one six-year-old son. When she was in her 20s, she met her husband, working as a receptionist. Although it seems like a happy family, Aikizuna, who has been going to the gym on the top floor to relieve loneliness after having a child, has become aware of a young trainer. And her desires expand and she ends up making her AV debut...