Yui, who is leaving work to get married and handing over her work to her colleague Osaki, is astonished at his incompetence. Then, on her way to work, she encounters a molester for the first time! Yui is so scared that she can't even make a sound, but a few days later, she is molested again. She becomes even more excited by the bold caresses! And the molester is Osaki! She becomes addicted to the abnormal caresses of the colleague she used to make fun of...