Ikki Funaki in "The Sleep Curse" (2017)

Follows the cursed life of a young translator who collaborated with the enemy during Japan’s wartime occupation. He is tormented by guilt after turning his back on the comfort women who were mercilessly murdered. Forty-five years later, his sin comes back to haunt his son, a professor specializing in sleeping disorders who begins a terrible experiment to exorcise his father’s ghost.