Gui: Space Between Two Deaths (2000)

During the Korean War, Ilhwa, who had been separated from her lover and had defected to South Korea, became a shaman and lived her entire life in the hopes of summoning the ghost of her loved one if he had died. However, time is cruel, and she has not been able to find that person, and she has grown old enough to smell death. One morning, when she wakes up from her bed, seemingly no different from any other day, she finds that all the ghosts she had sent to the South have come out to greet her.