I'm confused. joohyun said that to break the contract of being a link, one of the two must die, right? if they can't kill eachother, why can't hwan just hire people or perhaps vampires that aren't afraid of him or hate him to kill joohyun for him? I mean there's low probability it'd work since joohyun is a vampire as well and he's pretty strong, from what we've been shown. but it can work with right strategy idk
i'm everywhere 
