On an April night in Tokyo, still too early for fireworks, university student Kakeru Sorano meets a woman named Koharu Fuyutsuki. She is a beautiful girl who stands out from the crowd, laughs a lot, and exudes a warmth that contrasts sharply with Kakeru's own introversion. But there was something Kakeru didn't know at first—she can't see. Unlike Kakeru, Koh...