After college, Yukine marries a trading-company employee, but the seemingly fortunate marriage becomes suffocating. Suspicious business trips and unfamiliar perfume on his shirts deepen her doubts until he suddenly hands her divorce papers. That weekend, she walks home from a class reunion with her old classmate Yuzuru, who shyly reveals that he is engaged. They drink too much while reminiscing and discussing marriage, and Yukine brings the engaged man back to the home her husband has left, hoping to make one last memory with him.