Pinwheel Hamakichi's Spell(1981)

Hamakichi was a former detective respected by everyone but he was arrested after he helped a criminal flee for money, which he needed for his child’s medical treatment. Five years later, he is allowed to enter Edo with a fresh start. He make ends meet by selling toys. One day, he meets Otoki, a woman who is a lookalike of his late wife and who is being pursued by a mysterious man.