Mirror Magic is an anime-only, Caster-Type Magic, that involves the use of mirrors.
A Magic that allows the caster to summon and control the properties of mirrors. The number of mirrors does not appear to have a limit and multiple can be joined together, thus creating a three-dimensional object.
The caster is capable of creating multiple, also separate mirrors to virtually absorb and then reflect any opponent's attacks. However, it apparently can only do so with living objects. Another use of this Magic is traps. The caster can create multiple mirrors joined together around an opponent, rendering them unable to move.