Kayo Iwasawa, a representative of masochistic mature women and praised by maniacs for her irresistible orgasm face, tries anal sex for the first time! The feeling she got when her anus was licked sparked her interest in anal sex, and this is the reason for the recording! She starts off by masturbating, and then as she naturally inserts her finger into her anus, her lewd body gradually becomes aroused! Eventually, her anus is developed moment by moment by the body of an actor with extensive anal experience, and is filmed in ultra-high quality 4K/60P! This is a masterpiece for you who love anal sex, carefully recorded in every detail!