Yurine is the youkaipriestess for Tokyo. Ekou was the Karas for Tokyo during the Edo period but when he turned down the quotshadow pathquot she was forced to select new Karas. All Tokyo Karas since Ekou have fallen before him and Otoha is Tokyo039s last hope. Yurine holds the secret to a dark force empowering Ekou but its exact nature is yet to be revealed.