Steam : An ATLA Story

This story is for the ATLA fans, just like me, who can't get enough of it. I present to you Steam, a story with both romance and adventure. I also promise this won't look like any other romance story or ATLA fan fiction (because it isn't), we have enough of that already. Since I love the water and fire duo/couple, this will definitely be a major trope of this story so be prepared for it.

This story takes place in the ATLA universe but happens way before the events of the series. But things are a little different.. 20 years ago, the fire nation managed to kill Aang, the young avatar, in the slaughter of the Air Nomads. Now, as the Fire Nation has taken over on the Earth Kingdom with an iron hand, conquered the Southern Water Tribe and exterminated the Air Nomads, the sake of the world seems lost.. but hopefully, a surprising duo might change that.

Author's note: Even though this story takes place in the Avatar: The Last Airbender universe, you will see some minor changes in both the storyline and the Avatar cycle. But do not worry, those changes will have for only purpose to help me build this story and it will not go too far from the original universe. Thank you and have a good read!
(Also please note that English is NOT my first language so it is normal if some small errors happen, I will make sure to do the least I can I promise!)