Miboujin kaseifu: Nakadashi no yuuwaku

Original title: 未亡人家政婦 中出しの四十路

Directed by Sakae Nitta

After her husband's death, Michiko takes a live-in job as a housekeeper for a university professor named Igarashi. One day, while she is indulging in masturbation before her husband's mortuary tablet, the ghost of her late husband, Hiroaki, appears.