Xanthe Sorana is introduced into the story as an explosive and very spontaneous person, often times bouncing from one subject to another with a fiery vigor in their eyes. A high school junior who also attends Alastair's academy, they're first met by Alastair who formes a contract with them to save their life after they were caught in their hosue being set on fire.

Introduced in the story as one of the first Keys Alastair forms a contract with, along with Maisyn, Xanthe is one of the stronger Keys formed in this universe. Their powers are fire based, being general fire throwing and shooting, also specializing in pyrotechnic firework like spells and attacks, and on the flip side being able to heal others using her fire as well, bathing them in its light and warmth to stich cuts and scapes and ease pains. One of the few Keys that can fly. Stylized with blue and purple flames, despite having a red & black aesthetic.

A firecracker of a person (litrally) they tend not to sweat the small details of whatever they have to face in front of them, and goes into it with all of her might. Loves to be the shoulder for others to cry on and often times is there to let Mai vent to her about miscellanous problems. Interestingly strong sense of morality.