Jay transmigrates into Kaon, the Blood Prince—an infant superpower user destined to become history's most formidable villain. His ability to weaponize blood into devastating rain marks him as nearly unstoppable. The System assigns a single mission: eliminate Kade, the golden protagonist, and escape this world forever. The problem cuts deep: Kaon is barely one year old, his powers nonexistent, his stats frozen at zero. Jay knows from the stolen novel that Kaon eventually surpasses Kade in raw power, but can he survive that long? Raising him are a fifteen-year-old undead villain and a thirteen-year-old hero-turned-traitor—neither equipped for infant care or poverty. Every day brings new threats to his fragile existence. To claim his victory against the protagonist, Jay must transform from a helpless infant into a superpower master. Yet between battles for survival and constant danger closing in, a peculiar mystery haunts him: why does this world seem populated entirely by people named Jay?