He's on the run. Kyungsoo cannot stop running because if he does.. He will get him. Kim Jongin. A demon who has been after Kyungsoo he's entire life. When he was younger he was aided by his parents in running, but Jongin stopped that after he killed them. So Kyungsoo ran on his own, forming no connections, that way he wouldn't be upset if more died. He vaguely knows why.. The demon it seems, is in love. And nothing will stop him from being with what is his.