Ep. 6: Keith revela la oscura historia del Instituto Jaula Blanca mientras Yuna se enfrenta a Koku en un encuentro trágico.

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Koku demands Yuna's location, and Keith realizes Koku's messages were addressed to her. Keith has become a murder suspect and the team look into his past. Keith tells Koku about the Jaula Blanca Institute which tried to recreate winged beings whose fossilized remains were found, to restore gods of the past. The program resulted in malformed and insane people, who were ultimately used as a covert strike team called Market Maker. As a child Keith decoded an inscription which gave vital insight into the structure of the gods, and his father led research toward the institute's original goal. But Market Maker turned on the institute and destroyed it. Yuna appears and attacks Koku. He gains the advantage but his memories return when he sees her eyes and realizes who she is. She stabs him but her memories also return. However, as they accept each other, Minatsuki runs them through with a sword. (Source: Wikipedia)