Kimika works at a trading company and has always had a quiet, reserved personality, resulting in almost no interaction with men. Before she realized it, she had reached the age of a milf. At work, she is occasionally persistently approached by younger male employees, and though she gradually begins to take notice of them, her awareness of still being a virgin, along with feelings of shyness and guilt, always prevents anything from happening. One day, during a post-work celebration, she is suddenly assaulted by one of the younger employees. Through this first sexual experience, her virginity is shockingly revealed. This intense encounter becomes a turning point, awakening new emotions within her and prompting her to confront her true self.