Two years after I entered the workforce, I went on a day trip with my older Sumi-senpai. She was in love with her senior, who was beautiful, good at work, and the ideal boss that everyone envied. My feelings for my senior, who is married, are unlikely to come true, but I couldn't stop my heart pounding as we went on a business trip together. However, a business negotiation with a business partner doesn't go well and he ends up having to stay overnight. Due to the big festival, we couldn't find a place to stay, so we ended up staying in the one empty room we managed to find, just the two of us.