Jukunen no sei: Hitozuma ni tawamurete (2003)

Shortly before retiring, Shoji lost his wife and moved in with his daughter and her husband, yet he spent his days feeling unfulfilled in both body and spirit. His secret pleasure was using his pension to pay for "hotel-call" sex services; a woman named Erika provided him with exquisite pleasure that sent him into ecstasy. One morning, Shoji’s eye was caught by a newspaper advertisement seeking senior volunteers to care for elderly people with dementia...