Baptized By Fire (Avatar: The Last Airbender)

The Legend of the Last Airbender is a well known one. However, a lesser known part of the story is the tale of the Shen Siblings. These two were among the Fire Nation's finest assassins and bounty hunters, despite their young age. These twins were named Koto and Ekira. Born of noble roots and orphaned at a young age, the only thing they have left is each other. Now, these two assassins embark on their greatest mission yet. Their fates forever intertwined with the Avatar and his friends, the Shen siblings must be ready for anything that stands in their way... or else everything will be lost.

NOTE: This fanfic also involves a more mature take on the classic ATLA story. As such, it should be noted that this story contains blood, graphic violence, and strong language.