I just finished watching Blood so I figured it was a good time as any to jump and leave a review. That being said this is one of those dramas you watch where it's a cross between a art film and a what did I just watch??? lol. So if you're investing 20 hours into this drama go in with your eyes open to the fact it's almost like visiting a parallel universe where evil just gets more evil and anyone remotely interesting is going to die and anyone not even remotely interesting is going to die too. I'm a fan of Ahn Jae Hyeon's developing body of work so I took the time to watch this role where he finally got to be the leading man. The atmosphere of this drama is like watching a retro film trying to go for horror only with a slow building mild romance and a few touches of humor weaved into the stark Hospital sterile setting. And maybe that's the key to watching this drama it's over all sterile feel to all the deaths and logical viewpoint of the horrors of what's going on. Then throw in some welfare patients and do long winded experiments on them and watch some comical high-breed comical insanity facial features unfold. You sort of have to remove your own logic from your mind while watching this. That little voice in your head that says "Just quit that Hospital it's wiggie!" and "Why do people just keep going to work here???" and " Isn't it time for a makeover shopping spree Goo Hye Sun can't wear that pony tail forever!" But alas... You just have to pretend your the male lead in your own personal drama and stand strong and silent while making a fist. Now there is some comedy to this and cute moments between Jung Hae In's and Ahn Jae Hyeon research / roommate friendship. Also too there is some small moments of humor between the lead couple but their romance is like a soft wind where no matter how long you wait your fan-girl giddy heart kite is just never gonna soar in the sky. Although given the script to this story I think the actors did the best they could with what they were given. Goo Hye Sun... Now a lot of people hate on her and her acting and I think she's made some progress. It's strange in small scenes she sort of falls out of character and then in others she really does well. Like in ep 18 she really pulled off the heart breaking ugly cry but then in earlier episodes it's like she didn't know what to do with her eyes and seems sort of lost in discussion scenes. I would have liked to have seen more of her budding relationship with Ahn Jae Hyeon cause there was times you saw a spark of something there it's a shame their relationship wasn't given more time to develop. I really liked the four cast as the evil vamp minion guys I hope to see more work of those four actors cause they really a great job in this it would have been nice to see more of their personal stories then just what we were given. I hope to see more of these four actors soon for they all individually did really a good job. The welfare ward patients now I realize they are suppose to be going through some horrible medical transition phase but... I laughed myself to tears over some of their scenes. The only one person I truly found could carry off creepy was the girl with special needs. She gave a good performance but the rest I just found overly cheesy and badly played out scenes. Now the ending... You really have to pay close attention to the blood / virus / heart translation in the last 2 episodes. Die to live / live to die / blood virus / virus cure / jargon. You have to also assume the rest of the team solves the issues remaining in the welfare ward and just resolve yourself to the fact something's will never get answered and the inevitable question of why didn't anyone wear black leather sooner? Will haunt you for a long time. Overall I'd never rewatch it and the music was nothing to scream about but I've sat through worse and it's a shame this drama didn't stick with the fire it had for the first 5 episodes for if it had I think it would have been a really good show if it would have concentrated more on acting out scenes and not relying so much on long winded medical explanations.