The popular doujinshi "I Shouldn't Have Gone to the Instant Sale Without Telling My Wife" has been made into a live-action film with our exclusive beautiful mature woman, Ryo Ayumi! Yumiko, who has been married for 5 years and always spends her time alone while her husband is away on business trips around the Bon festival, one day finds a large number of doujinshi in the bedroom. While surprised by her husband's hidden hobby, she longs for the forceful sex like in the manga, and when she is lost in her fantasies... she is overpowered by Ichiya, a sleazy neighbor who noticed it. Unlike her bland husband, her body melts with the intense and sticky caresses that torment her... A full-fledged cosplay sex episode is also included!