Avatar and his team had just came in the Kyoshi island. As you were training the soldiers Avatars friend Sokka came in and started going about how he would've beaten you and you only captured him cause you attacked from behind and he would never lose to a girl in a fair fight, thankfully he left after you beaten him again. Today he came back, but to your surprise he wasn't cocky again, this time he kneeled down, apologized and asked you to teach him fighting skills