A Mutant In A Bender's World (LegendOfKorraXMaleReader)

A Young Firebending boy has floated towards the Southern Water tribe on an Ice Berg, and was taken in by the Airbending Master Tenzin as a student. He had very little memory of his life before, and for a good reason, because the experiment effected much more than just his body, but also his mind. He and his sister f...