Leinster, the youngest heir of the Vandro family, was born with a hatred for blood, but discovered during the inheritance ceremony that the "holy blood" he drank was actually poison - this was exactly the trap set up by the Elders' House to eliminate mutant bloodlines. When he was dying, the ancient vampire genes sleeping in his body awakened, and the mark of Cain appeared in his pupils.
In order to find out the truth, he broke into the forbidden library and discovered that the "Blood Law Code" that had been passed down by his family for thousands of years was actually made of human skin, and the "Sacred First Embrace" ceremony recorded on it was actually a genetic modification surgery. When the Church Crusaders breached the castle, Leinster tore open his chest, revealing a mechanical heart that beats with the moonlight—it was the immortal core dug out of the fallen spaceship by the first generation of vampires.
"We are not monsters." He crushed the Holy Grail and let the silver liquid burn through his palms. "We are just a group of abandoned experiments."
The blood moon was in the sky, and all the vampires suddenly heard the electronic sound deep in the blood: [Immortal Experimental Subject No. 13, Activation completed].