Harumi is a single mother living with her teenage daughter in a luxury apartment. The apartment is very expensive but she doesn’t rent or own it. It belongs to her “husband”, Kyohei. He comes from a wealthy family who do not allow him to marry a divorced woman. So they just live together like a married couple without being actually married. Although Kyohei is a busy businessman and only visits Harumi from time to time, she is satisfied in this married life.