
Noo, it's doseungji - her brother (or I'm not sure if we know their exact relation, could be a cousin) KJ went to him for help and to tell Nok knows now everything. I believe KJ couldn't have entered the queen's house on his own.
I'm going to go through that dialogue and the one between Jaeshin and Nok in detail so have some patience with me;D It was smth about eating flesh and how it works. Other than that doseungji begged for his life, then she tells him to bring her son if he wants to live. In person.

Easier to write straight than describe, so:
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Queen(or the evill possessing her, 'cause they're the black bubbles):
I tried not to eat dirty human bodies as much as possible...
But now after eating it, I guess I can live awhile.
Just as I've thought, this kind of body is not enough... I need more. Dirtier, more odious...
Bring the Grand Prince.
I need to take that body, which received all kinds of sordid/filthy misfortunes.
Even If I masticate your nauseating entrails a hundred times, they can't be compared to that filthy one.
If you don't want to die, bring him with your own hands.
Right now-!!!
tbc.

You're welcome :) Yeah, and I love it when it's creepy :D I hope daegun will be safe. I bet Nok will rush to save him, so Jaeshin will have to interneve :3 So many great moments before us. But now the end seems to be nearer... I don't want to...( T﹏T )
The last part. Jaeshin: "there's nontrivial murderous aura oozing from the queen's quarters. Worse than usual." He's aware someone got killed, but doesn't know who. As well as that daegun's life time is getting shorter rapidly, so they have to hurry up. If the kid dies, "the things will become more difficult". Also his inner thoughts: "It seems Han Chaehui is commiting every possible atrocity to save her life. But it's not much of use."
Now I noticed the ghost's are gathering probably in the daegun's quarters - I was looking for the hanja in the last panel, but couldn't find them. I'm sure about "the gate" thoughXD The one in the middle looks similar (but mirrored!) to 賢xian: honorific for younger generation. Jaeshin commented someone could think there will be a feast, the ghost's are swarming like a pack of dogs looking for smth to eat.
And then he reminds Nok to stick to him no matter what happens. :3
Omomo, when doseungji with Kyeongjun were standing before the queens gates and I had this thought: maybe KJ can be sacrificed so the last backfired curse won't kill the queen and the story won't end too quickly. That was a right death for him, now I'm satisfied (=・ω・=)
However it would've been nice to see more gore. The killing(eating) went fast.
The queen! Is officially my fav villain. I liked her more covered in blood being insane than donned with royal garment.
Nok will now make Jaeshin rescue another human ^_~ I believe they'll make it in time to save daegun (Nok's younger half-brother)