Married woman "Kana" and subordinate "Ai" who work at a major cosmetics company. Ai is cheerful and energetic, but she is sloppy and makes many mistakes, while Kana is an excellent employee who is trusted by the president. She is beautiful, kind, and popular with both male and female employees. Ai was secretly in love with Kana. On the day of her business trip, which she had feelings that she couldn't tell anyone, she ended up staying in a shared room due to unexpected troubles. As the drinking progresses, the relationship between the two approaches rapidly.
