Akame was an Iga ganin, the descendent or possibly the son of Akame, possibly the second Akame and 2nd genaration desendant of Ōzaru, and the ancestor of Akame. His master trained him and his fellow ganins Takamaru and Kikumaru to wield swords and fight humans in war. His master was killed by Oda Nobunaga's men and Koga ganins who had joined them. Akame ran and brought the secret technique scrolls to the master's son Kotaro. A year after this, Akame had his revenge as he managed to kill Nobunaga during the chaos caused by Akechi Mitsuhide, Nobunaga's traitorous vassal.