Pls help

It's a fantasy manhwa where the mc competes with others from different sects(?) to become the new king iirc. The characters wear traditional korean clothing like hanbok i think. I think the mc was secretly a girl or maybe has a scar on their body, so that's why they were cautious when injured or taking a bath. The mc has like a long white haired subordinate who's borderline yandere, like very obsessive and protective of the mc. It's not isekai or reincarnarion or has a game system. I forgot most of the plot but i think the last chapter i read was about the flashback of the current king and queen when they first met, the queen was a blacksmith or mercenary (i forgot) and the king fell on first sight