Ami, who has earned the trust of those around her and completed numerous tasks, was assigned to be the mentor for Miyotsuki, a new graduate employee starting this spring. However, Miyotsuki is capable at work but arrogant and independent-minded, causing Ami headaches as a mentor. Just then, Miyotsuki, who is usually reliable at work, was unusually working late. Reluctantly, Ami decided to stay late with her. Then, when the last train had already left, Ami agreed to Miyotsuki's suggestion to spend the night together in a hotel room until morning…
