With Mangekyo, I Escaped Konoha To Other Worlds [Naruto/AttackOnTitan]

Not long after the Third Great War, five words sent ripples throughout the Ninja world.The Uchiha Clan was slaughtered.In that year, Itachi Uchiha became an S rank Missing Nin. And Sasuke Uchiha became the sole survivor of the Massacre.Or so the Ninja world thought.Because similarly in that year, a Transmigrator born into the uchiha clan years ago transmigrated again.But not before leaving with an awakened Mangekyo Sharingan and a vengeful promise to kill Itachi Uchiha and destroy Konohagakure upon his return.His name?Seiji Uchiha. ...----[Prime World: Naruto][First world: Attack On Titan][Second world: DC]