The busty mature woman with a great figure, Kazuka Ninomiya, is dressed in a sailor uniform. She is unable to hide her embarrassment, so she is asked to masturbate and urinate. It's sexy to watch her gradually awaken to the pleasure that comes from her embarrassment. She also has an obsession with bloomers, competitive swimsuits, sailor-style erotic cosplay, etc. The humiliating scene where she has panties pulled over her head is a masterpiece.