Pandora's Brotherhood (on hold)

(Avatar X Male Reader) Troy Sully is a 17 year old highschool dropout who lost his arm in an accident and joined military school despite his handy-cap due to the stubbornness he shares with his older brother, he joined his brother Jake on a trip off-world after their brother was killed. Jake not wanting to leave him behind brings him along with permission from the people who offered him the position