These are the events from the book 'Isle of the Lost' if Ben would have been raised on the Isle.

Humanity failed to stop the Night King and his legion of undead. The displeased gods decide it should take a greater role in the fate of humanity. They send the Prince Who Was Promised and a Lannister back to before the war equipped with their memories. Even with the advantage of hindsight, things never go as planned. Jaime meets Brienne Chapter 33

The Avatar faded from memory and the Fire Nation won. A new hope rises when an enigmatic waterbender is recruited to the imperial army alongside a carefree air nomad, a blind heiress, and the fire lord's brooding son. Unexpected friendship meets battle lines, court intrigue, and slow burning attraction. [AU Zutara, rated for smut & general darkness]

Months ago, Katara arrived at the Royal Palace to save her tribe and to win the heart of the famed Prince Zuko at any cost. She thought THAT was going to be difficult, but after startling romantic revelations, an attack on the Royal Family, a hidden Avatar, and a nefarious rebel group in the shadows, she might be in over her head. The Prince's Choice sequel. The Selection!Zutara AU

Emma Swan must marry her true love by her twenty-fifth birthday or she will have her crown taken away and be banished from her kingdom. Her parents give her until her twenty-fourth birthday before they step in and arrange a marriage for her to Prince Neil. While trying to learn to love Neil, Emma crosses paths with the famous Captain Hook.

In an Alternate Universe, Sidious found Anakin at the age of seven and raised him to be the ruthless Sith Lord, Darth Vader. He knows nothing of love, only hate and anger. So what happens when Padmé starts to show curiosity for the Sith Lord? (Seriously, M for later chapters) Re-uploading is taking place in earlier chapters

A Hook/Emma angel/demon AU. They hide in plain sight, the servants of heaven and hell. The angels and the demons, who can save your soul or damn it. They stand on opposite sides, they are the bringers of light and the agents of darkness, they are enemies in an eternal war, but what happens when an angel and a demon are inexplicably drawn to each other?

Katara is 18 and the Southern Watertribe has been uneasy allies with the Fire Nation for the last 100 years. When Katara's tribe faces a food shortage, she takes a drastic step to ensure survival; enrolling herself in The Prince's Choice, a competition in the Fire Nation where Prince Zuko will choose a future wife from 35 girls. Zutara Selection!Au