Ichika lives happily with her husband and daughter, Miki. As Miki reaches the age of marriageable age, Ichika is happy to hear about her love life and is pleased to see her daughter growing up. However, "I want you to meet Tomoya, too." The next day, Miki brings her boyfriend, Tomoya, home. Ichika is comforted by Tomoya's sincere personality and wishes Miki happiness as a mother. However, Tomoya has feelings for Ichika that go beyond being "her mother." A few days later, while Miki is away, Tomoya visits Ichika.