Ever since Yumi (Yumi Kazama) reunited with her ex-boyfriend at a class reunion, she has been unable to get her ex-boyfriend's face out of her head. And the memories of those days come back. We were both young and lacked courage. How much did I later regret that the relationship ended without a pure relationship? I wonder how she would feel if he held her. The feelings that had not disappeared for 20 years had swelled to the point where they could no longer be suppressed when they met again. At that time, Yumi's husband will be away from her house for three days on a business trip...