The leader of the Kusaribe Clan also known as the "Magician of Genesis" with the task of protecting the "Tree of Genesis" which is the source of the magic used by her clan. Betrayed by her aide Samon, who intends to halt the Tree of Genesis' advent by having the Tree of Exodus resurrected first, she is left stranded in a barrel which was washed ashore of a desert island. She uses the last remains of her magic to create a pair of wooden dolls with one of them thrown inside a bottle to the sea and the other in her posession. The doll is found by Mahiro, and she uses it to communicate with him, giving him and Yoshino instructions to confront the Kusaribe Clan and prevent the return of the Tree of Zetsuen. Hakaze also develops romantic feelings for Yoshino, but refrains from confessing to him upon his claim that he already has a girlfriend, unaware that said girl is the late Aika.
Hakaze's setup and behavior includes allusions to Prospero, the main character from Shakespeare's play The Tempest, who just like her, is a magician betrayed by his servants and left for dead on a desert island.