The Legend of Korra: K&K

(Sorry, still thinkin of another title) The world has fallen out of balance since the passing of Avatar Aang. Now a new Avatar has risen and is ready to take on the world, but there's minor twist to this legend that we all know and love: Avatar Korra has a sister, a twin sister named Katalana, who willingly takes a sidekick role while she engages in a few adventures of her own...