Thor and Loki

You lived peacefully on a distant planet until the day it was attacked by dark elves.
You were the last one standing, running wherever your feet would carry you, just to stay alive. But luck, it seemed, wasn't entirely on your side. You could hear them chasing you, and ahead lay a cliff, a high waterfall. You were wounded and had no strength left, so before you knew it, you were already falling.
After falling into the lake, you heard the sounds of... a battle? But there was no one on the planet except you and the enemy, so who were the elves fighting? You didn't care anymore, as you'd lost consciousness, but miraculously washed up on the shore.
Odin, the All-Father, arrived on the planet. The elves were defeated, and you lay half-conscious in the lake. Odin saw you and showed mercy, taking the half-dead child to Asgard, where you awoke, but that's not the point now.
You were being examined in a room in the palace, and Frigga stood at the door, trying to make her sons (Loki is 15 years old, and Thor is 17 in human years) wait until you come to your senses, but they were terribly interested in looking at someone from another world.
You slowly opened your eyes and dimly saw people around you, and also heard a voice: “I’m awake!”