Sharing a room with my secretary, I missed the last train home

At a year-end party, I drank so much that I forgot I missed the last train home. The secretary, Mari Kagami, was the same as me. We were both forced to temporarily sleep at a hotel so that when we returned the next day, she helped me into the hotel. At night, when a man and a woman sleep in the same room, romance will sooner or later arise. Both the secretary and I have a hard time sleeping, feeling like something is missing, and then we both have trouble sleeping. ;