Belle Chan

You mean underrated. I see NO ONE talking about this masterpiece. Beside MDL people who found it.

All these bad ratings aren't totally acceptable.
The storyline is meant to be unfolded.
I've watched many vampire kdramas and this was a good one, second to The Night Scholar.
The cast was hitting every spot.
And no, this isn't an insult to vampires.
This opens a new light on vampires.
We saw vampires shining like crystal under the sun, we saw vampires burning under the sun but protected by a solar ring this time they are protected by drinking enough blood.
This drama is supposed to be romance and dramatic, not horror or comedy.
The main lead chose death instead of killing, so what? We saw Stefan Salvatore dying to protect humans.
We saw a man wanting to kill someone for their blood? So what? We had Matt Donovan hating on every vampire ever.
The female lead had character development, do you actually think someone as cold as ice would not bat an eye if someone were to act warm with them? If you think she was better off cold, that's bulls*it.
The supposedly reincarnation of Hae-sun was off from the start, she was already obsessed and became obnoxious.
Manhwi was the villain, every kdrama has a villain/bully.
The trio vampire, friends to him. They were always good.
The FL's father, would have preferred him to have died? Bulls*it.

All you give are excuses for not understanding an ending or more likely, the feelings they wanted to portray.

I reccomend the drama.
You may will feel sad but at the end you will understand the ending.
Let's say it has a double sided ending.

You should watch the remake of Criminal Minds. That was very good

I believe we do since the original mountain God is back alive and took Tulipa's "see everything" eye.
Also we saw Rang becoming a full nine tailed fox so it could give hope to have him back on a 3rd season.

Not every tv show and movie stick to the same ending and sometimes plot of the books they are from. The director and writer of the Kdrama would probably reveal why there was a change in the ending. Who knows.

Maybe they will release another ending. Sometimes they release two/three versions or just explain why they wanted to end it differently. I believe we should wait and see what is the reason behind the different ending rather than give feedback in a vulgar way.

That was my misunderstanding. I didn't see you answered someone else's comment so I thought you mistook this Kdrama for a Cdrama. My bad. I apologize.

That may be because you didn't understand the meaning of this kind of ending.
I reccomended you to watch Real as a way of understanding.
This kind of ending is rarely used because people like you and others don't understand it and they go with "an ending like this isn't acceptable".
Give the movie a try.

This is a Korean drama. Kdrama not C drama intended for Chinese drama.

That's what they aimed for. If you've watched the movie Real, you would kinda understand why they ended like this.
Sure, it was felt like at first he died and became Dojun but then it ended as if he was in a coma and lived everything Dojun passed. I mean, all of them, glasses or not, would have recognised him. As the end is actually up to us to interpret and not as an actual ending, it's a given that we feel confused but saying "wtf is this shit" is the most horrendous thing to say when it's obvious that the ending is up to us to interpret.
How come Dojun's driver recognised him a both accomplice and Dojun? Because before fainting, due to the hit, he saw both which gives the doubt. Why was he the only one to notice and remember? Because he was the only one to see them both in the same place.
Now another theory could be the doppleganger one. As you know when you meet your doppleganger bad things happen.
Another theory could be that Dojun didn't die but ended up forgetting his past and lived as Hyunwoo and when he was nearly killed he remembered all his past but the question still remains, how come the only one remembering his face was his driver? Not his ex girlfriend/fiancee, not his father, not his friend Oh Sehyeon, his own relatives. Why is that? Because they don't know if it's him as well as we don't really know if he's both or they are two different people who just look alike.
Now the question, how come we didn't see the family in mourning? How come we didn't see Dojun actually die but just faint? How come Hyunwoo didn't know Dojun's face through the first episodes? How come he started working for the company the same day Dojun died? People would have thought it was him, don't you think?
Watchers tend to rate as unsatisfactory when they don't get the ending nor understand why it is up to interpretation.
It could be a loophole.
Could be dopplegangers theory as well.
He could be in a coma.
Any theory is valid.