Harden Armor (硬化装甲 Kōka Sōkō) is a [[:Special:Ask/-5B-5BCategory:Spells-5D-5D-20-5B-5Bspell-20category::-5D-5D|defensive spell]] cast by Agito. It creates multiple hexagonal barrier-like obstacles out of the defensive clothing. As such, the spell is tentatively classified under barrier-type defense.