Sora Naegino (苗木野 そら Naegino Sora)
Sora is the main protagonist of Kaleido Star. Her parents took her to Kaleido Stage as a child. Although they died shortly thereafter, and Sora was adopted by her father's cousin and his wife, Sora is inspired by this childhood memory to become a member of the Stage when she reaches adulthood. With her adoptive parent's hesitant approval she travels to the United States to audition. After Sora's luggage is stolen, she stops the thief but is late to the audition. After being depressed due to her failed performance, the owner Kalos, having seen her chase earlier, convinces her to perform in the actual show. Most of the cast, including Layla Hamilton, are dissatisfied with Sora due to the special circumstances through which she joins; Her manager Ken has feelings for her and excepted her from the start and they kiss in the end of the series,the other cast members accept Sora due to her persistence and hard work along with her magnetic personality, as well as performing a stunt called "The Golden Phoenix". Though Sora is a fairly talented performer, there are often huge gaps in her ability, especially on the trapeze. This is because she was never taught before joining the Stage and so the first maneuver she learns is Layla's Golden Phoenix, an exceptionally difficult move, so she mostly knows only extremely challenging maneuvers and very little of the basics.
In the beginning of the series Sora is the only one who can see the magical stage spirit Fool. This character reveals she has been chosen by the stage. In the first season, Fool reveals only she can perform the Legendary Great Maneuver with Layla. In the second, he reveals that she has the potential to become a "true star".
In the second season, Leon does not approve of Sora, and May tries to prove that she is better than Sora, and should have been the one to perform the legendary maneuver with Layla. At first, Sora aimed for being Leon's partner, but then, while doing the Angel's act with Yuri, she realizes that what she really wanted was to turn Kaleido Stage into a joyful and happy stage just like the one she saw when she first saw Cinderella at the Stage, along with no conflict, and stick to that dream, which she told Layla, while still wanting to be a true star.