'Kyouko Kazan is a character in the Twilight Syndrome series. She is Ryo Kazan's sister and lover. She dated Sumio Toba but loved Ryo more. Sumio makes a contract with Mithra, causing the events of the game. She is killed in a truck accident which is seen on the news by Mika, with her parents telling her she must be careful and that they will protect her. In the game she will talk with Ryo many times. She has an uncanny resemblance to Mika. Her body is kept by Sumio her head by Ryo.