
Im at chap 10 amd i dont think Hangyul really liked his stepbrother, he just probably thought that way coz he has been alone for a while and now have someone new in the fam. Personally thought its love at first sight for Hangyul to Heeyong.
I might be wrong since im only at chap 10 but rhis is sooo good.

Who is that again and why is he just appearing now?

He is the crown prince. The king wasn’t allowing him to ascend as yet so he used the king’s persecution of the Persus family to stage a coup and take the throne. He appeared very briefly a few chapters ago. He seems to be a good ruler because he called his father greedy for coveting the Persus. And he appeared with the lady that is Atali’s confidant. Let’s hope it true.
Gimme the money i need that