My Stepsister's Vampire Guardian
Arin, a sixteen year old, lonely orphan, believes his life has finally changed when he is adopted by the mysterious House of Tristan. But their pale skin, crimson eyes, and night rituals reveal a truth darker than he imagined-they are vampires, bound by ancient bloodlines and secrets.
Among them is Selene Tristan, his dignified yet kind stepsister, who is more than she appears; Princess of the Royal Vampire Palace, heir to a throne hidden in shadows. When Arin discovers he carries the rare and coveted Saint Blood, a power said to rival kings, he becomes the target of rival clans who seek to claim his essence.
On the night of a brutal attack by rival vampire clan, One of the vampire manages to mortally wound Arin. To save his life, Selene turns him into a vampire, binding him to her forever. Struggling with hunger and identity, Arin awakens powers beyond ordinary vampires: Blood manipulation, Soul resonance, and heightened senses. His destiny is rewritten, he is no longer just an orphan, but the sworn guardian of the princess.
Arin and Selene face escalating threats: rival clans, vampire hunters, and finally a primordial god drawn to Arin’s blood. Their bond deepens, torn between duty and forbidden affection, even as prophecy looms over them. In battles beneath blood moons, Arin must decide whether his Saint Blood will doom the vampire race or save it.