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"