Shadow is the 6th rank in the game. It costs 63T coins and gives an x12 ninjitsu multiplier. The cost is 40.9T coins if the player owns the Masterful Wrath Element and the Blazing Entity Element. Equipping this rank will emit a black aura around the player's torso and hands, as well as red lightning particles from the player's torso.
The Ninja rank can be unlocked upon purchasing this rank. In addition, purchasing this rank will unlock the portal to the Eternal Boss.