The ml is so dramatic why couldn't he be worried about his little sister and the fl. Like he didn't know she was missing at first it came after. Also I love that they keep bringing up her family from korea. She had a good life and I love that they keep showing it. I also like that her parents are okay because she's not " dead" they switched bodies. The only things I don't like is the contract sword thing, it wasn't needed, unnecessary to me. I don't really like any but the fl.