Claire Cruz (クレア・クルス, Kurea Kurasu?) is a girl who had the powers to control wind since youth, and was called a witch by people around her. She joined the Wind Revolution as Nina Viento (ニナ・ヴィエント?) and helped defeat enemy forces of the Balsteros Empire, but lost her powers after the revolution.
She requested to hide her identity as Nina and joined Cadoques High's Aerial Division, where she became Kal-el's flying partner. She fell in love with Kal-el, but becomes conflicted with her feelings after realizing he is Karl La Hire. During the final battle with the Sky Clan, she regains her powers. As part of a treaty with the Sky Clan, she is taken to the Holy Spring in order to fulfill their prophecy.
|Toaru Hikuushi e no Koiuta / The Pilot's Love Song|
|Cadoques High||Ariel Albus • Kal-el Albus • Ignacio Axis • Juan Rodrigo Bandereas • Wolfgang Baumann • Claire Cruz • Mitsuo Fukuhara • Nanako Hanasaki • Shizuka Hazome • Noriaki Kashiwabara • Chiharu de Lucia • Fausto Fidel Melze • Sharon Morcoz • Sonia Palez • Marco Santos • Benjamin Sharif|
|Congress of Isla||Luis de Alarcon • Amelia Cervantes • Leopold Melze • Marcus Sanchez • Nina Viento|
|Kal-el's Family||Manuelle Albus • Michael Albus • Noelle Albus • Gregorio La Hire • Maria La Hire|
|Others||Marcos Guerrero • Fana Levamme • Seagull • Silver Fox • Countess Ulshyrra|
|Characters in bold are the main characters|