Orochimaru apparently kept tabs on Akatsuki, as Kabuto was knowledgeable about Zetsu, and Tobi's machination to revive the Ten-Tails. Even when removed from reality by Itachi, being an extensive researcher, the notes he left behind were still coveted as vast stores of knowledge to those fortunate enough to come across them, as seen when one of his hidden rooms is found by Suigetsu and Jūgo, the former of which finds information he believes can impact the war. In his absence, Kabuto used Orochimaru's remains from his battle with Sasuke to integrate his master's DNA into himself in order to surpass him. Having also assimilated the DNA of Sakon and Ukon to procure their abilities, Kabuto uses the twins' Attack of the Twin Demons to produce a construct of Orochimaru that transforms into his White Snake form and lunges at an opponent. However, Orochimaru lived on, in a sense, through cursed seals and Kabuto after the latter integrated Orochimaru's DNA into himself. Knowing the nature of the seal to contain parts of Orochimaru's consciousness, Sasuke revived Orochimaru by transferring a portion of Orochimaru's DNA which was retrieved from Kabuto's modified body into Anko's Cursed Seal of Heaven.