Two siblings have traveled to Republic City to live a peaceful life. Curiously, neither of them remember their own past. Knowing how the world is now, all they can rely on are each other and themselves only as they grasp the unquestionable power in their own hands. Kamen Rider is rightfully owned by Toei. Legend of Korra is rightfully owned by Michael Dante DiMartino and Bryan Konietzko & Nickelodeon.

Just read it.