Celestia

A lesson that can’t be taught, an heir that can’t be found, and a monster no one knows exists. Taliah’s small-town life is thrown into chaos when the king of Celestia dies of a mysterious illness. A powerful mage uses this confusion to employ the energy of forbidden crystals to influence the citizens of Katera, brainwashing them to do his bidding. The corrupted people, form an army that will stop at nothing to achieve their master's goal. War is on the horizon, and it is left to young Taliah and her friends to restore the rightful heir to the throne. But Taliah is changing faster than she can come to terms with her destiny, and the consequences will drastically alter her world.