Look I don't wanna ruin the mood but... what if the day comes when Sooin dies like even if Hwan and Sooin live eachother it won't do anything cuz Sooin is a normal hooman so there will be a day when he dies right and Hwan can't even keep Sooin alive even though he's a vampire some of you will say that he can make a link and all but remember at some ch it said that a vampire can only make a link once in their life and he already has a link with Joohyun or whatever so Sooin will die... but i hope that doesn't happen and that Sooin and Hwan has a happy ending