Is It Wrong to Conquer a World During My Isekai Adventure?

After successfuly killing his twin sister and stole the half Yang of the Kyuubi chakra, Haru Namikaze is torn from his own world and tossed into the endless abyss that is the Twisting Nether only for our villain to not only survive in the maddening chaos of the Nether but thrive! How will the fate of Azeroth change with the interference of a morally bankrupt and pragmatically sociopathic shinobi who suddenly gained magical powers?