Memories of Tomorrow (Ashita no Kioku - 2006)

From back cover:

In “Memories of Tomorrow” Ken Watanabe plays Saeki, a 50-year-old ad executive whose life is practically perfect: he commands the respect of his employees, he loves his wife Emiko (Kanako Higuchi) and his daughter will marry soon. But one day Saeki has troubled remembering names and confusion sets in. His wife convinces him to visit a doctor, who delivers a devastating diagnosis: early-onset Alzheimer’s. “Memories of tomorrow” follows Saeki and Emiko as the couple embarks on a journey where every dark marks a step closer to losing everything.

Director: Yukihiko Tsutsumi

Screenplay: Hanaru Sukamoto

Ken Watanabe - Masayuki Saeki
Kanako Higuchi - Emiko Saeki 
Kenji Sakaguchi - Naoya Ito
Kazue Fukiishi - Rie Saeki
Asami Mizukawa - Keiko Ikuno 

The film is based on a novel of the same title published by Hiroshi Ogiwara (2004)

 

Comment: 

In memory of the already fragile condition due to Alzheimer's disease, Saeki (husband) prepares himself to face his old days with a reservation at the nursing home without the knowledge of his wife, Emiko. A very touching film.