A magic circle (魔法陣 Mahoujin) is a figure composed by a great number of symbols related to the powers, techniques and procedence of the magician. Generally, the magic circles are what differentiates mages from one another, each creates a magic circle of their own - it is like their signature. Magic circles work as an field of energy that activates the moment a mage is about to perform a spell. This magic circle is visible under the mage's feet, and its power surrounds him/her as if it was a Ki o