Biography
__Nen Type:__ Conjuration
Knuckle Bine is an Unidentified Beast Hunter and Morel's apprentice. Despite appearing to be an aggressive man, Knuckle is very compassionate and easily moved to tears. Knuckle also gets along well with animals, having the habit of taking care of abandoned pets.
__Knuckle's Abilities:__
~! __Hakoware__ (天上不知唯我独損)
_Type: Emission and Manipulation_
Hakoware involves Knuckle emitting an indestructible mascot called the "Amortizing Power Redirector (A.P.R.)" ("Potclean"; ポットクリン, Pottokurin, in Japanese) onto the opponent after being dealt a blow from Knuckle. A.P.R. constantly lends Knuckle's aura to whomever it is attached to, displayed by a rising counter on its forehead. When adding interest, A.P.R. announces "It's time, adding interest" (「時間です。利息が付きます」, Jikan desu, risoku ga tsukimasu). As long as A.P.R. is attached, any attacks done to Knuckle by his opponent return aura to him, lowering the counter. Until all of the aura lent by Knuckle is returned to him, he cannot be physically damaged by his opponent. The reverse is also true: each of Knuckle's blows only lends more aura to his opponent, causing no damage. The stronger the attack, the more aura is lent or returned. In both cases, the person suffering the blow can still be knocked back by it, despite suffering no damage.
The interest rate on A.P.R. is 10% of the borrowed aura, accrued every 10 seconds while the victim is within 50 meters of Knuckle. As the amount of borrowed aura (including interest) accumulates, A.P.R. also grows in size. When the aura borrowed from Knuckle exceeds his opponent's total remaining aura (specifically P.O.P), the opponent "goes bankrupt". Thus, it is in Knuckle's interest that his opponent spends/wastes as much aura as possible, as quickly as possible (so long as said aura is not spent on Knuckle himself). The result is that the opponent's "aura balance" falls that much quicker until it is below the amount they owe Knuckle (displayed by A.P.R), at which point they can no longer possibly repay their debt and bankruptcy sets in.
Bankruptcy causes A.P.R. to transform into the "Individual Ren Suppressor (I.R.S.)" (トリタテン, "Toritaten"), a demon-like mascot that follows the debtor for 30 days and forces them into a continuous state of Zetsu. It is worth noting that when Knuckle struck Shaiapouf's copy, A.P.R. was attached to the latter's real body rather than to his clone. Furthermore, Knuckle can use Hakoware on multiple targets at once, as well as track their general location at all times, regardless of the distance. The ability can be removed by an Exorcist, but it takes a great deal out of the Nen remover. It is also cancelled if Knuckle is rendered unconscious.
It is unclear what Nen types are involved in the ability; A.P.R. (and later Toritaten) might be conjured and rendered invisible to non-users, which would increase the aura cost, or emitted and possibly transmuted. Regardless, Manipulation would likely be required to endow the construct with sentience (and possibly to enforce Zetsu on the target), while Emission might be involved in the process of lending aura to the opponent.!~
