But what happens when gong-ja succeeds and returns to their world, would the butler remain or..
It's honestly hard to say for now, we don't have anything to go off of considering the floor we've already seen involved already dead people. I'd say that ideally what'll happen after Silverlily, Gong-ja, and Heretical Inquisitor leave is that the story will transform into a more straightforward romance novel, with the Gold lady being wed to the Crown Prince and the butler simply pining for her from a distance.
*Spoiler*
Butler will not be able to remain cause he also made a wish using his life/soul as collateral with another constellation. That is also why none of the people there remember the Butler’s name, even Lady Golden Flower that is his childhood friend. Gong ja will reveal what his wish is and why he made it on the day of his wedding aka. battle of this arc.







but again won't this timeline eventually turn into a bad ending since taehyuk essentially fell into a long slumber meaning he couldn't give the pearl to his lover and ascend
I am also confused...
Yeah, I think something bad will happen to Taehyuk either caused by the king or something else.