A long time ago, a group of vampire slayers spearheaded by the Park Clan were the only defenders of the people against the wretchedness of the vampires in the human world. They battled for centuries. One aimed to protect, while the other craved for destruction. Unfortunately, the Park Clan was infiltrated by a vampire. Slowly, the group crumbled. One by one, they were turned while others were killed. The vampire legion succeeded for years. They brought destructions to mankind and they believed that no one can stop them.

Or so they think.

Unbeknownst to them, a Park Family was able to survive the brutal attack of the vampire legion. It took years even decades to stay hidden. They trained and learned to adapt to their new physical changes. They waited for the right moment to seek their vengeance. Among the survivors is the daughter of the strongest vampire slayer to ever lived. The legion killed her entire family. She, however, survived. And through the help of a master slayer, she adapted to her new self.

Half-Human, Half Vampire. Half-Angel, Half-Evil.

Sandara Park is the blood angel. And her name will forever be a threat to the vampire world.

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A couple of centuries ago dated longer than the Joseon Dynasty, the Kim Family ruled the vampire world in South Korea. Their traditional belief to stay hidden and to take only what was necessary for them to lived were widely accepted by the vampire society around the world.

But there were some who dissent.

A minority ruling class wanted more. They hated to be controlled. The hated that they were stronger than the humans yet they needed to be restrained from taking over. A traitor from the ruling family brought destruction to the Kims. And then, they were no more.

And so, the battle of vampires and human slayers plagued the country for years. And at some point, the vampire legion reigned supreme over the slayers.

But unbeknownst to the vampire traitors, a group of the Kim’s loyal vampires have uncovered a secret, a weapon. And it just happen that this is the time he is expected to wake.

Kim Jaejoong, the lone royal vampire of the East, the only one left after the massacre of his entire royal family is about to walk the earth after hundreds of centuries.

He is the progenitor. The day walker. He is the Prince of Darkness.

And no one will be safe.