In the midst of all this fighting, the truth of Gazelle, the "First Set of Wings," is told. In his younger days, Kaito came across a girl who flew like a bird, and he fell in love. Dr. Minami built Gazelle with the very first "heart to fly." The Takeuchi twins attack them in the hope of gaining her powers. The fate that binds Gazelle, Kaito and Agito is slowly revealed...