Wasurerareta Kamisama (2021)

Yukari has lived with her older sister Aki following the death of their mother. Due to bullying, Yukari is never at school and, instead, spends time sketching at a riverside. It is there that she meets a mysterious man who calls himself a god. Yukari and this strange man communicate with one another until the day that her sister Aki discovers that Yukari isn't going to school. Yukari decides to run away from home after an argument and when she returns to the riverbank where she always spent time with the old man, she finds that he is no longer there…