Ami, who has been trusted by those around her and has done a lot of work, will be entrusted with the education of Mizuki, a new graduate who joined the company this spring. However, Mizuki can do her job, but her cheeky and self-paced personality makes Ami have a hard time as an educator. At that time, Mizuki, who is usually able to work, was working overtime unusually, so Ami decided to stay with her crying as an educator. And Ami, who has no last train, will stay in the same room at the hotel until morning at Mizuki's suggestion.