Bong Sun is underdeveloped by herself. She always goes back to default mode of whimpering and apologizing, which is kind of boring to watch, especially after the excitement of Soon Ae running around in Bong Sun's body. That said, I want the actual Bong Sun to grow stronger and just be a happy medium between both personalities. That would be perfect!
Soon Ae is selfish and one-track minded, as she is cheerful, fun and fearless. I really, really like her. There are certain things about her, I don't agree with, but it's so refreshing to see such a strong personality in a female lead, even if there are a few negatives. But I do hope Soon Ae, starts thinking about Bong Sun a little more, than just seeing her as a vehicle to posses and drive around. I'm going to cut her a little slack this time, because waiting for Bong Sun to come around or call the emergency services is taking valuable time from saving her dad...but she needs to start seeing Bong Sun as a person! Right now, she's kind of dismissing it and her...
But need I say, I like seeing such a strong personality. If she ironed out that selfish thing, she'd be perfect :) But I guess, right now, it's part of her charm....
(PS: Sung tae just clipped the cart? Was that meant to be seen as malicious in some way?)