Nakamura had been admiring his female boss, Umino. Although he admired her, it was only as a figure of admiration in her professional life. One day, after finishing a business trip with Umino, they went out for a light drink, but Umino's cute girl's inner self became visible while she was drunk. Nakamura fell in love with Umino as a woman by the way she was clinging to him. In a private room izakaya, Umino and Nakamura became good friends, and Nakamura, who wanted to spend more time together, deliberately missed the last train and went to a business hotel. They spent the night together. That incident became the catalyst for them no longer being in the relationship of boss and subordinate.