I think the Queen is a thot or prolly better. Why?? Some reasons ahead:
1. Wincest FTW😁. She looks super good 😍, but what irks me the most is the next reason.
2. Her facial expression when she replied to the Kings remark of his son being his (due the mark showing properly on chest of the MC). Her face was like, she was just about to be caught in the act.
3. Plus, MC is the 8th child. since the King stated that the birthmark was there in a proper manner (like not in a faded condition, possibly highlighting the diluteness of the genes), it's possible that other children of them do not have a proper mark.
Well, i hope this goes for the Wincest-harem route but the tags don't do justice to my expectations.