Responses

first they're not really step brother they've know bcs theirs fathers were friends so it's not incest. Second his wife is only like conctract mariage bcs their not in love with each other it's just for theirs image like "ohh a fabulous actress is married with the son of the most popular corporate in Korea" I don't know if you'll inderstand.. ╮( ̄▽ ̄)╭
I only went through A Paramour but haven't read it yet. So I have 2 questions.
1- Are Merry and his step brother lovers?
2- Why did the step brother get married to that woman with the yellow hair???