Japanese Movie 'The Revolution of Tokyo Saba Girls'

This is the film about a middle age woman who works hard and gets nothing in Tokyo. Miss Mackerel is one of Tokyo Saba girls who are cold but lonely. She meets some guys, and they behave not so good for her. At last, she has an item with a man who works in the same cafe for a part time job. When she gets a proposal by him in the day of her grandmother's funeral, she says "No" to him. But...