Yu is the manager of Anzai, she has a very fast promotion rate and there are some rumors about her in the company. They say that just being alone with Yu will result in being completely 'eaten' by her. Anzai initially thought these were just baseless rumors, but when his colleague Maruoka, after working overtime with Yu, turned into an empty shell, he began to believe in the rumors. And his worst fear came true. Yu chose him to accompany her on the upcoming business trip. She promised to teach him and had high expectations for him. When Anzai told his wife about the rumors and the upcoming business trip, his wife dismissed the rumors as childish pranks and advised him to do his best to prove himself. And the day of the business trip arrived, Anzai understood why those rumors existed, and the reality was much more terrifying than the rumors...