Children of Nagasaki
A doctor who was widowed during the bombing of Nagasaki decides to write his memoirs before he succumbs to radiation sickness. Directed by Keisuke Kinoshita.
Starring Gō Katō, Yukiyo Toake, Chikage Awashima, Megumi Asaoka, Takeshi Katō, Ai Kanzaki, Shinobu Otake
Watch "Children of Nagasaki" on Criterion Channel released in 1983. It's a drama movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie.