"Humanity used to be the dominant race in this world, until one day, beings with strength and magical power far surpassing our own showed up. We call them vampires. They stand at the top of the food chain above humans and feed exclusively on human blood, ignoring all other races. They are our natural enemy, born to wipe us off the face of the earth."

"Naturally, a war broke out. It took the lives of the most elite royal knights to fight back the vampires. The war came to an end when the legendary knight, Dot , the Colossal , sacrificed himself to kill the Vampire King, turning the tide in our favor. For 10 years, not a single vampire appeared, and humanity could finally live in peace, until now"