In the beginning, all the characters were shitty including jeongmin who was a coward, who was obsessive and psychotic but that’s what made it interesting. That’s why she was fit for Siyun in the beginning who was similar.
But the author did a 180, and that side of jeongmin is gone and now she’s just a saintly coward. Except Siyun does a 180 character development, they would never end up together.
That being said, Still waiting for the next chapter (〜 ̄△ ̄)〜