Red Love, Green Love
1962 Japanese movie
Yukiko Shiba, a doctor, and Akira Sakai, a composer and musician, are lovers. Their love is a forbidden one. He is married, with children. She is a doctor with a bright career ahead of her.
A businessman who dreams of a successful career ends up embroiled in a murder case after a love affair.
The cunning detective Akeichi must foil a kidnapping plot orchestrated by the notorious jewel thief known as Black Lizard.
"Though still young, Natsuko gave up the life of a geisha to become the mistress of the president of a shipbuilding company. When he is about to re-marry she insists he either wed or stop seeing her. Returning home, she again meets the man she first loved and for a time thinks of married happiness."