When David was little, he looked up to his big sister literally. As the two siblings got older and David began towering above her, he looked up to her figuratively. They had a strong brother-sister bond. When the Great Shift came upon them, he didn’t fret when he found himself in his sister’s body. He knew she’d be there to help him out with whatever obstacles came his way. And when he found out she was now in his body, he knew he’d be there for her too. David still looked up to his big sister, and now they had switched bodies, he knew it would be literal once again as he looked up to the tall body that was once his from the short body that was once his sister’s but now belonged to him.