Y/N Beifong was the son of Lin Beifong and F/N L/N who left Y/N at the age of 5 after finding out he wasn't gonna be the next avatar but he still was able to bend two elements Water and Earth and their sub elements but he never had a very good life ever since his birth and he left at the age of 9, 10 years later he returns but what would happen when he reunites with his mother and meets the new avatar Korra of the water tribe and her new team avatar.