( English version of Chronicles of the Crimson prophecy)
world where vampires rule, an oracle or future prophecy appears that they will disappear at the hands of one of their own race, but they consider this oracle a mere threat, on the one hand this oracle has hope for other races because they are tired of the power and cruelty of vampires they begin to develop alchemy and tools "to fight vampires."
Kai who was originally a human who lived peacefully with his family in a human village became inversely proportional when he was 11 years old, a horde of vampires came to his village and slaughtered the entire human village including Kai's family. Seeing this, Kai tried to fight back by biting the vampire's leg.
He said, if you drink vampire blood, you will become part of them. Kai forgot about that, he only mobilized his body to think about defeating the vampire. The vampire whose leg was bitten by Kai pulled Kai's shirt collar and looked at him
"Oi, stupid human. Are you so eager to be my slave? If you drink Vampire blood then you're not human anymore." He said while laughing out loud.
Will Kai be able to avenge his family and everyone in his village?