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s a Transmuter, Killua's most efficient in changing the form of his Nen. As such, Killua developed a Hatsu in which he transmutes his aura into electricity. This feat was both inspired and made possible by the years of electric shocks he received as a child, both as training against torture and as punishment from his older brother Milluki. In order to use the ability, Killua needs to charge himself by absorbing electricity through a socket.
