Yuri Kishibeno is a housewife who lives with her husband and their two children. Yuri Kishibeno attends her sister Misaki Tono's funeral where she meets her niece Ayumi for the first time in many years. Ayumi is still unable to accept her mother's death and, because of this, she can't open a letter left behind by her mother. Yuri Kishibeno attends her sister's reunion to inform them about her sister's death. A read moremisunderstanding occurs at the reunion and Yuri Kishibeno is mistaken for her late sister. Yuri Kishibeno meets her first love Kyoshiro Otosaka who mistakenly believes she is Misaki Tono. They exchange contact information. A few days later, Yuri receives a message from Kyoshiro that says "Can you believe that I am still in love with you?"