Aika and Takumi were secretly carrying on a romantic relationship at work. Takumi, cool and quiet, always treated Aika coldly, causing her to gradually grow dissatisfied. Seeking comfort from the loneliness, she grew closer to her cheerful and kind senior, Kobayashi. However, Takumi became resentful of their relationship, especially when he learned that Kobayashi had pointed out a run in Aika's pantyhose. Alone in the office, Takumi's jealousy erupted, driving the story toward a climactic confrontation.