Blood Medicine

Demons, as the lowest beings in the mainland, have been despised and treated like trash. They appeared suddenly in this mainland and caused havoc in the four great kingdoms. The rulers of each kingdom decided to push these creatures in the abandoned lands where they will no longer be reached by sunlight. 

But there were rumored demons who have retained their eyes. They have been lurking in the shadows for centuries. Some say they are purebred demons retaining the purest life forces from centuries of wars and battles. Some also say that these demons were once gods and have been punished by the heavens. Fighting the Demon King made her realize that there were still demons with eyes. Because aside from the demon king, she just faced another one. But why were his eyes removed?

"Master! Can you hear me?!" Blue's frantic voice jolted Yllana. "Master!"