Somehow without my realizing, the girl I liked for all those years had become a man-eating sexpot. Summer vacation. Ordinary protagonist Youta (virgin) found himself making out with his childhood friend Rio (non-vigin)… “Do you like doing it with me…? I’ll take it off for you…” Youta was bewildered. It was his first time, but certainly not hers. He put himself in her capable hands.
SF: The Movie

As childhood friends Youta and Rio embrace the heat of summer, their innocent bond ignites into raw passion when Rio seduces the inexperienced Youta. With whispered promises and teasing touches, she guides him through their first intimate encounter, her confident hands undressing him slowly while he surrenders to desire. Though overwhelmed by her expertise, Youta gives in completely as Rio takes control, their bodies melding in frantic, wet ecstasy beneath the sweltering sun.