Abjuration Magic

Abjuration Magic (宣誓魔法 Sensei Mahō) is a variant of Barrier Magic.

Overview
Abjuration Magic is a form of Caster Magic whose philosophy is that the best defence is a good defence. There are two things a mage can do to prevent harmful forces from coming into an area they want to protect: reflect or refract those harmful forces. The magic gives its users the ability to manipulate and shape their magic power into thick barriers of opposing kinetic energies or transform it into baffling shockwaves designed to flex the path of approaching threats. If you understand the treat you can form a shield against it. Abjuration shielding can be customized to deal with many different threats, but rarely can a mage handle more than a few different weapons at once. So, the key to the effectiveness of any shield is not the amount of energy you can spend on maintaining it, but the experience and knowledge a user has in casting and recasting her shielding spells.