Stepmom and Daughter Blues (2018)

Eight-year-old Miyuki lost her mother several years ago and has since lived with just her father, Ryoichi. One day, she is suddenly introduced to Akiko, who is to be her new mother. Akiko uses her stellar business skills to try to win the little girl over, only to fail miserably. Ryoichi tries to reason with Miyuki, but to no avail. Akiko changes tactics and tries to get Shimoyama, a woman in the neighborhood who knows Miyuki well, on her side.