JKSManga

The human Race is at war with the Vicious Dalki and when they needed help more than ever, THEY started to come forward. 

Humans who had hidden in the shadows for hundreds of years, people with abilities. 

Some chose to share their knowledge to the rest of the world in hopes of winning the war, while others kept their abilities to themselves.

Quinn had lost everything to the war, his home, his family and the only thing he had inherited was a crummy old book that he couldn’t even open. 

But when the book had finally opened, Quinn was granted a system and his whole life was turned around. 

He completed quest after quest and became more powerful, until one day the system gave him a quest he wasn’t sure he could complete. 

"It is time to feed!"
"You must drink human blood within 24 hours"
"Your HP will continue to decrease until the task has been completed"

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OTHER WORKS
My Werewolf System
My Dragon System

My Vampire System

Being a demon king didn't mean one was just powerful, or born with natural power. Although there was perhaps some talent involved, they weren't born this way. Just like the vampires, the Durum demons were a simple existence and through many of their kind being produced, stronger ones eventually appeared and this was the same for Kronker as well.


Because of this, he had been through many battles, all of them in the current world they were in. Still, he was sensitive to energy and could tell the person in front of him had a large amount of energy that was affecting the whole planet that they were on. 


'This energy, it's not only large, but all of it, it's his own energy!' Kronker thought. 'He isn't using the energy from the air around him, all of this is his own energy. Right now, he has enough energy to match us, the demon kings!'


Demon king's quest