Yôji Misaki

Yumi Aoyama is now a girl diver in shallow waters to cut oysters and other shellfish delicacies, and eventually pearls, from the shallow underwater rocks, like so many poor girls of her village. She comes from a rich family, but the Aoyama's treasure has been buried in a great earthquake when she was a little girl, and with the treasure, her lost sister.

A pirate hunts down women. (The Movie Database)

A store manager named Kinbei becomes enraged when the owners of the store decide to hand it down to an adopted son instead of him. He hatches a plot to murder them all, but as it turns out he has done this sort of thing before. As bodies pile up in the nearby Kagami Pond, a ghostly vengeance is about to be unleashed.