Six Meetings and a Kill Challenge
Okay, so the thing is pretty simple:
1. This consists of seven chapters.
2. It's happening during Book One of legend of Korra and starts one week before Episode 6.
3. The Courier somehow appears on Air Temple Island, heavily injured (That is up to you - Transportalponder malfunction, supernatural anomalies or whatever.). Jinora finds him, Korra heals him and Tenzin takes him in. Don't pretend it can't happen.
4. For the next five chapters Six bonds with Tenzin's family, recovers and meanwhile listens to pro-bending on the radio, observes Korra's training and takes in the political climate of Republic City. Then Amon makes his ultimatum and Six decides to deal with the situation the only way he knows how.
5. Episode 6 happens. By the end Amon must be killed by The Courier, no matter what.
6. Romance is fine, just don't make it too… cheesy.
7. What happens to Six after the deed is up to you.
8. Pleasant writing and please, PM if you'd like to take up my humble challenge.
Have fun!