Unchain Knuckle (アンチェイン・ナックル Anchein Nakkuru) is a [[:Special:Ask/-5B-5BCategory:Spells-5D-5D-20-5B-5Bspell-20category::-5D-5D-20-5B-5Bspell-20type::-5D-5D|whirlwind-throwing attack]] spell capable of freeing the caster from [[:Special:Ask/-5B-5BCategory:Spells-5D-5D-20-5B-5Bspell-20category::-5D-5D-20-5B-5Bspell-20type::-5D-5D|binding spells]], self-learned and used by Einhard Stratos in ViVid. It was also a signature move of Quint Nakajima in the past.