"R-right here, this is it..."
"Cool, now open it," I remarked, giving him a push towards the door.
After I realized that I needed a Royal alive in order to free the Demon they've got in their clutches, I retracted my slime and yelled into the room through the crack at the bottom of the door, telling them that I'd spare them if one of them took me to the room where the Demon is.
Since they knew I could just kill them if they refused, thanks to the acid slime I'd almost drowned them with, they complied and opened the door, the King volunteering to take me to the Demon.
He then led me to the entrance to the dungeon, guiding me down through the space until we finally reached the floor where the Demon was being held in.
I do sense some animosity and bloodlust from this guy, which I suppose is understandable. I mean, I am intending on overthrowing him and taking over his nation.