Lyra

 is a girl who grew up at the church in Kilter with Cooro, and was artificially given a swallow Anima by Fly Greena Aight.

History
Lyra grew up at the church in Kilter and would often play games with Cooro and the other children there. Some time after Cooro had left to the Astarian National Research Facility, Fly Greena Aight offered to take her there and implant an Anima into her; she took him up on this offer.

Plot
Lyra goes to Yellow Valley to participate in the 1st Yellow Valley Race. She encounters Cooro there, having not seen him since their time at the church. She shows off her Anima to him and flies away.

During the race, she is the first participant in the air race to reach the first checkpoint; this makes her a target for Jesso. As the race continues through a narrow part of the valley, she is able to evade Jesso and cause him to crash. Shortly after, while still flying, her Anima leaves her and she falls to the ground; Cooro is barely able to grab her and soften the landing. Senri carries her back to town.

While resting in a bed back at the town, she confesses her jealousy of Cooro, and worries how Fly will react now that she has lost her Anima. Before leaving town, Lyra talks to Nana about Cooro and Fly. She tells Nana that Fly could take away her Anima.

Cooro
The two grew up together at the church in Kilter. Lyra's believes that everyone there was nicer to Cooro, and that it was because of his wings; this sparked a jealousy that would cause her to desire an Anima of her own.