
I'm kinda sure it's na kyum they're talking about. Tho while the body underneath him is kinda big, you know it could be because of the angle of the scene. If you look at when he carried the fiancee princess style, he's smol yall. And he hide his fiancee face underneath his own clothes. You know he only ever allowed the painter of be wrapped around, covered or wear his clothing. No one else was ever allowed before. And he never hide any of his partner's before na kyum. Because he can't stand to hide him. But didn't want other people to see na kyum's nudity either.
He viewed Na kyum as his. He is obsessed to the max. Remember before they f*cked, when Na kyum talked to his teacher on the front door, he came with a sword. Just in case the painter was planning to run away again, he's gonna stab him then n there. Remember? That's how obsessed he was. I don't think he can move on and get obsessed with a new toy so quickly. Na kyum IS his new toy/boy/fiancee/concubine/partner. Now that na kyum acknowledged he wants him willingly, you can see there was trust. When na kyum went and see the old man to give his painting to his teacher, he just wait and observed his from afar. Because the night before na kyum already confessed he desired the lord. For sure, if the confession didn't happened, you will know the lord will stalk him right behind his butt wherever he went even in his own damn household. Lolol.
Spoiler:
In the sneak peak of season 2 on YouTube link in lezhin, they went out on a date at a market. With na kyum wearing the winter clothes he gave. Does that looks like someone with a new fiancee to you?
I don't know guys..
That's the first time I see that glint in her eyes. She's no longer a fearful child now. She's a full salvatorian. Watch out lady in blue dress, she's coming for you, Barbara.