Memory Door (1970)

Kazuya (27), an office worker, is what is called a "good listener" who listens to his parents. One day, however, he happens to stop by a café and falls in love at first sight with Reiko (47), who works there, but Reiko is divorced, has a child, and suffers from dementia. Kazuya's selfish feelings lead to encounters and experiences with various people, and he realizes true love.