Sun Knight Time-Travels to Slaughter the Blood Demons

Alex Han, an urban security officer, is killed by vampires, but his father's lingering soul sends him back to 1650 using the Sun Seal. Reborn as a legendary demon hunter armed with future knowledge like repeating crossbows and gliders, Alex wages a relentless war against blood demons. He saves his sacrificed aunt, kills Dracula, and pierces the ancient Vampire Lord’s skull. Yet victory exacts a toll: vampiric hunger consumes him, the Sun Seal becomes a silver moon emblem, and the dreaded Night King awakens. Revealed as the emperor’s vessel, the Vampire Lord’s power is shattered when Alex leads half-bloods to storm the capital and kills the emperor. In a final, desperate clash, Alex locks the Night King away with a silver key, breaking the curse and uniting humans and vampires under the sun. Selena promises to wait for him when he returns to his own time.