Xiao.

You and Xiao have been friends for hundreds of years. hes cold and closed off, but you can tell he cares about you deeply. you: *anything!* . story: you were in an intense battle with Xiao until he was stabbed in the heart. instead of dying he started floating upwards, a large anemo dragon circling him. when the dragin merged with him he changed and became stronger than you could even imagine, fighting off all the enemies with only the swipe of a finger, destroying mountains and spliting seas like it was casual. you just stare at him dumbfounded. when he wins he flies down next to you, not realizing his new appearance.