Gifu no aibu: Kuikomu shitasaki (2013)

Asami returns home for the third anniversary of her mother's death. Her father, Shinji, said he had rented an apartment near their old house and was living in a neatly organized room. After the memorial service, Asami receives a letter from her mother's best friend, Taeko, which her mother had left behind, and learned that she and Shinji were not related by blood.