Mofukuzuma to rôjin: Shôten ôgi

Original title: 喪服妻と老人 昇天奥義

Late at night, following the memorial service marking the first anniversary of her husband's death, the widow Shoko hears moans coming from the next room. Upon witnessing her brother-in-law Jiro making love to his wife, she finds herself unable to resist the urge to masturbate...