The bearer of the omnitrix: Legend of korra; Book 1(male reader x korra x asami)

This is the story of Y/N L/N; an 18 year old boy, the bearer of the omnitrix and hero of universe 87. He has been an orphan throughout his life but that all changed when he turned ten, that's when the story of Y/N L/N began. When he turned 11, he was well known by everyone in his universe know him as the protector of his universe but all good things must come to an end. He was devastated to know that his universe is coming to an end and there was nothing he could to save it. Professor Paradox comes with an offer to have him live in a world where people with the power of the elements and a person known as the Avatar who is able to bend all 4 elements and offering him a family who will love and care for him. And with that Y/N accepts Professor Paradox's offer. So begins, the new journey of the omnitrix bearer, Y/N L/N