Hasegawa, an insurance salesman, coincidentally runs into Nanako on the street and becomes interested in her. He then uses his insurance sales pitch as an excuse to get closer to her. Meanwhile, Nanako learns from her friend Misa that she's pregnant, and realizes that she and her husband have fallen into a sexless rut, leaving her feeling lonely. Hasegawa doesn't miss the vulnerability in her emotions and gradually deepens his approach, seeping into her heart.