Mourning Wife's Secret Technique: Koshibano (1996)

Sinopsis

Tomorrow is her husband's 77th day. Ayako strips naked in front of her urn containing her husband, and she suddenly makes a decision to put on her mourning clothes. Ayako's late husband, Jiro, was jealous, sadistic, and insidiously bullied her. Even in the bedroom at night, Jiro becomes abnormally excited by being jealous of her friend Katsura and blaming Ayako for her unrealistic delusions. From Katsura, who came to pray on the 77th, she heard about her husband, which Ayako did not know. "He was the only person she could call her best friend..." Ayako recalled that day's affair with her husband. It was sex that could be called painful...