Secret of One Summer (ひと夏の秘密) 45 years old

Roman Porno from 1979.

Credits

Secret of One Summer Cast

Name	Character
Eimei Esumi He was 43, 68 years old when he died	as Gunji
Etsuko Hara She was 22, now 68 years old	as Chihiro

Secret of One Summer Crew

Name	Department
Yozo Tanaka as Screenplay. He was 39 (now 85) years old	Writing
Naosuke Kurosawa as Assistant Director. He was 33 (now 79) years old	Directing