Miboujin kaseifu: Nakadashi no yuuwaku

未亡人家政婦 中出しの四十路 (original title)

Synopsis

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.