Board Thread:Speculation House/@comment-24218038-20131127005419/@comment-24218038-20131127021853

Interesting so this implies choice determines the soul. I see evidence to the contrary in the show. The soul seems to determine how you will react to situation. Like it determines auras and semblance.

Case in point Yang, aura yellow, semblance fire, she's also impulsive, has a hot temper and shows her emotions pretty easily.