User blog comment:-Mr·Bubbles/Earth & Water recap/@comment-3242030-20130829081606/@comment-5927802-20130830042230

Love the light and darkness idea but Wind and Thunder? That doesn't even make sense. Besides, Earth and Water actually still refers to FP and IK. Earth is a reference to what's left after the fire goes out and water is what Ice becomes when it melts. It's like  representation of the aftermath. This episode is actually 2 stories, as you can see.