"Furachi" is an erotic hentai OVA series produced by T‑Rex that follows Kai, a young man who becomes obsessed with secretly watching his attractive neighbor, Ikenaga, through his camera lens after discovering her apartment is fully visible from his. What begins as a guilty voyeuristic habit takes a sharp turn when they accidentally meet and end up spending an intensely passionate night together, only for Kai to learn that Ikenaga had been aware of his gaze all along—and secretly craved the thrill of being watched.