Kazuma Magari

Besides being smart and athletic he is the president of his schools student council. His personality is usually cool calm and calculating but when angered Kazuma can be worse than an actual demon. He did not believe that monsters and demons existed until he was contacted by the Dark Liege who sent Nora to him in a box. He calls Nora a stray dog in spite of Noras complaints. Noras magic is stored inside Kazumas body and cant be used without permission. Early on it is revealed that channeling too much of Noras power would damage his body. To combat this The Dark Liege gives him a set of magic dog tags and a bracelet that looks like a dog collar. While he can be cruel even down right nasty he truly cares for others not allowing Nora to use magic if it will endanger others leading battles away from people and manipulating Barik into providing Nora a lesson in unarmed combat. Kazumas emotions effect how powerful Noras magic is though in the end the magic that powers the spells is all Noras originally. Source: Wikipedia