Twilight Q - S01

A Knot in Time High school students Mayumi and Kiwako are enjoying their summer vacation at the beach. But when Mayumi finds a camera while scuba diving that seems to have been lost, her curiosity gets the better of her. After developing the film, she is shocked to see a photo of herself with a man she does not know. With help from Kiwako's older brother, the three learn something even more unsettling: the camera model has not been released yet. Mayumi grows obsessed with finding out where the strange camera and its mysterious photo came from. File 538 Airplanes have been disappearing from the sky. Stranger still, rumors say the vanished planes have been turning into giant carp. Meanwhile, a freelance detective looks into a run-down apartment on the edge of town, where he finds a middle-aged man and a young girl who seems fond of fish. Unable to identify either of them, the detective enters their room, only to find it empty except for a document that reads, "This story has been prepared for you, my successor... who should be visiting this room in due time."