Iroha Narumiya, a beautiful mature woman with a glamorous body that is out of proportion to her small frame, takes on the classic sex challenge. Her gentle face changes dramatically as soon as sex begins. While toying with the man with her long tongue, she herself becomes immersed in sex that seems to have no end... By the time her white skin, which doesn't look like she's in her late twenties, turns red, she has reached countless orgasms, and no one knows how many times she has done so...!