Sayaka Otoshiro, a 19-year-old who has never dated, is eager to experience adulthood. She has long admired idols and actresses, dreaming of a life where she can perform for an audience. While appearing innocent and charming, Sayaka possesses a mature figure with long legs and a height of 169cm. This documentary captures her first time having sex with a girlfriend, as the girlfriend navigates her own feelings of excitement and apprehension. The film is presented with honesty and a sense of youthful vitality.