Her husband doesn't show any interest in her son's growth due to his busy work schedule, and they don't have sex either, so Kana can't help but feel lonely. One day, when her mama-chari breaks down and she is in trouble, Kiriyama, who also has her child at the same nursery school, comes to help her. Having a great time chatting, the two meet again on their way home from shopping in the evening and exchange contact information. On his way home that day, Kiriyama ends up delivering Kana's child's handkerchief that Kana had dropped to her house.