Heavenly Restoration Wine

Cale was still stunned from Asteria's sudden shout and he could help but study the body of the dying emperor.

The former dashing middle-aged man was now very thin and look like a decaying corpse. No hint of blood can be seen on his body. 

"Asteria, what is this Soul Devouring Demonic Poison that you mentioned?" Cale could no longer hide his curiosity, so he asked Asteria with an inquiring look.

"Soul Devouring Demonic Poison is self-explanatory. From the two words 'soul devouring', it means that someone who was inflicted with this type of poison will have his soul slowly devoured until he dies. 

The pain of having your soul slowly being eaten by this poison is unimaginable. And for the emperor to hold on for his life up until now represents his unparalleled strength and willpower.