I just completed reading the novel raws (it's completed) and it's totally worth my time even it's mtl
The duke seriously head over heels for him lol but he's so sweet the ending chapter when they get married, usually the empress would kneel in front of emperor but when mc kneel, the duke also kneel just so he can be on eye level with the mc. He knew mc felt a bit distant when he kneel and had to look up towards ML, so he kneels too out of respect
So gentlemanly, those Andrew Tate alpha male followers could never smh.
Also I never expect the red head guy and his relationship with his brother got such plot twist. Thought it was just abusive jealousy power hungry sibling drama. Edit; it happens around chapter 73 for those who want to read it(note that the word "lady" is probably "sir" , Korean language usually use gender neutral pronounce so Korean mtl always butchered the characters gender. I can't reply to that person who ask about what chapter it was for some reason ugh. So I add it here)
Also fuck that "loyal subordinate" of the duke.