@twilightspirits I think I found it, it is a one-shot called "Majesty, no" (it is a red head empress/queen). But I couldn't figure it out if it has a novel.
According to what I read this manwha Will come out next year.
@twilightspirits unfortunately, I can't seem to remember where I read it and which title was, Sorry (but I have been looking for it, if I know something I Will tell you)
@TranceShoujo & @Sarsak
I also want to know more about this queen, especially because I have read somewhere that it was a parallel story to Ebony's Arc and that even has its own novel or manwha