The Mourning Forest

The Mourning Forest is a 2007 Japanese film directed by Naomi Kawase. It won the Grand Prix at the 2007 Cannes Film Festival. It tells the story of a nurse who is grieving for her dead child. She works at a nursing home and grows close to an elderly man, suffering from dementia, who is searching in the local forest for something connected to his dead wife that he cannot explain.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.