Ichika lives happily with her husband and daughter, Miki. As Miki reaches adolescence and begins talking about romance, Ichika joyfully watches her daughter grow. But one day, Miki says, "I want Mom to meet Tomoya," and the next day invites her boyfriend Tomoya over. Kind and sincere, Tomoya captivates Ichika's heart, filling her with genuine wishes for her daughter's happiness. However, Tomoya harbors feelings for Ichika that go far beyond mere respect for his girlfriend's mother. A few days later, while Miki is away, Tomoya visits Ichika at home...