Ichika is married and lives an ordinary life. However, she has not been able to break free from her past SM habit, and even now, without her husband's knowledge, she is registered at an SM club. One day, Ichika goes to see a customer and realizes that the customer is the neighbor she greets every morning. The contrast with her everyday life makes her even more excited, and while they both notice each other, they continue to play pretending not to notice. The two continue their relationship many times, and eventually...