Yukito Kunisaki
Yukito is a traveling wanderer searching for the 'girl in the sky'. This goal has been passed down his family for from generation to generation for the past thousand years.
Misuzu Kamio
Misuzu is the first of the three girls featured in Air that meets Yukito Kunisaki. She befriends Yukito, and invites him to stay at her home. She is a cheerful, slightly clumsy girl, and often utters the pseudo-dinosauric phrase Gao when she feels troubled.
Kano Kirishima
Kano is the second of the three girls to meet Yukito. She is usually energetic and playful, and often says strange, nonsensical things. Kano is friends with a stray dog named Potato that follows her around and is able to communicate in his strange manner of speech. She always wears a yellow ribbon tied around her right-hand wrist, believing that when she grows up and takes off the ribbon, she will be able to use magic.
Minagi Tohno
Minagi is the last of the main girls to meet Yukito. A top student in the school, Minagi is very shy and quiet, which isolates her from others. Until she met Yukito, her only friend was Michiru, with whom she often blows bubbles at the old train station.