Yet another silly SVSSS AU/fic prompt where SY transmigrates into demon/creature within the endless abyss. He's been transmigrated there hundreds of years before the plot and decides to spend time making abyss a little awful and organized.
If he can fix some plot points and get things less chaotic (airplane seriously just crept adding stuff that made zero sense to get more sex scenes) so SY will fix that and make things less bad for Binghe...
He ends up taking over the entire abyss without realizing. Man is emperor of the abyss.
Xin Mo has been begging SY to wield it but SY is like 'i'm not touching the protagonists golden finger, why would I do that i'm just an NPC'
SY has not realized he's the feared emperor of the abyss, tales of his power have even reached outside texts, he is the great terror that rules over all others and untied all the creatures under his power.
He just keeps thinking this is just to make things easier for Binghe... he's mentioned a few times about LBH and his subjects have heard a heavenly demon hat will fall in who SY talks about with adoration.
Clearly they all decide SY is a seer (it would explain a lot) and LBH is their future bride.
LBH falls into abyss ready to start revenge arc... only to get scooped up by first demons who see him and take him palace to apparently 'future husband' LBH is ready to start killing... until he meets SY.
Empress of the abyss suddenly sounds very appealing.
SY: I can help Binghe go though this arc with less trauma and then i'm sure he'll leave and become emperor
LBH: I am empress of the abyss and I am never leaving.