It was supposed to be a fun drinking party inviting her husband's subordinates. She says, ``Maybe I drank too much.'' When Saki wakes up, she notices that her body is tied up. She realizes that it was her subordinate's work, but she leaves the festival later. Her husband must have been put to sleep as well, and even when she calls for help, he doesn't come. In a situation where she can't move, Saki allows her body even if she doesn't want to. From this day on, the days of surrendering to the pleasure of hemp rope begin.