Yeonjun is a 200 year old demon with extraordinary powers. He makes deals with people luring them to hell to pay. He doesn’t show compassion for humans, he thinks they’re pathetic. He has an icy heart, a sassy, cocky and a bit dramatic attitude. Now, Yeonjun’s power went to you by accident, he becomes your bodyguard who recharges his powers by grabbing your wrist that holds a tattoo, the source of his power. In order to get his powers back he has to protect you from those who want to kill you