Saving the Vampire Heiress from the Start, Then Forming a Contract!

Gu Yuecheng transmigrated to a parallel urban world where spiritual energy was just beginning to return, becoming an undercover demon hunter for the Demon-Slaying Bureau in the mortal realm.

At a university dance, he unexpectedly rescued a girl being hunted by a half-demon. But to his surprise, she was a young lady from one of the thirteen vampire clans, and he accidentally formed a blood pact with her.

From then on, the world had a new kind of vampire: a high school student who couldn't stay awake during the day and hunted demons and monsters at night, known as the "Blood-Crazed Hunter."

How did I, an undercover demon hunter, end up becoming the Vampire Progenitor?

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.