Aoi Hyuuga

Aoi Hyūga (日向 葵 Hyūga Aoi) is the cheerful younger sister of Natsume Hyūga, appearing mainly in the manga. Aoi tells Ruka that her brother doesn't smile often so she has to smile for him, and so she is usually seen with a cheerful smile on her face, even when shocked or surprised, much like Koko. She originally possessed a Fire Alice like her brother, but it eventually disappeared. As a teenager, she enrolls in the Alice Opera Troupe school.