Kanon (2016)

Ai Kishimoto, Yukari Miyazawa and Akane Kishimoto are sisters. The sisters live apart in Kanazawa, Toyama and Tokyo, but they gather together to attend their grandmother's funeral. There, they learn about their mother whom they know as deceased. While seeking out the the truth about their mother, the sisters face their own problems, but take a courageous step forward.