Mori de Seijo wo Hirotta Saikyou no Kyuuketsu Hime - Musume no Tame nara Kuni de mo Assari Horoboshimasu!

Feared across the realm as the "Vampire Princess Who Reduces Kingdoms to Ash," the True Ancestor Angelica has once again reduced a nation to smoldering ruins with a wave of her hand. Yet today's cataclysm was not born of conquest or malice—it was committed for the sake of a single, tearful cry: "Mama!" Years ago, the cold-blooded killer stumbled upon a human infant abandoned in the depths of the forest. Taking the child in, Angelica expected little more than a fleeting whim. Instead, she was utterly undone by the baby's cherubic softness and an innocence so untainted it pierced her immortal heart. The merciless sovereign who once delighted in devastation has since been replaced by an overprotective, doting mother, spending her days indulging in a blissful, affection-soaked domestic life with her beloved daughter, Pearl. However, peace shatters when the kingdom's foolish monarch learns that Pearl is no ordinary child—she is a rare and powerful "Saint," a living vessel of holy light coveted by the crown. Plotting to seize the girl for his own political ends, the king sets his treacherous scheme into motion. But in targeting Angelica's daughter, he has made a fatal miscalculation. The maternal love that once softened the vampire princess has now rekindled an inferno far more terrifying than her legendary flames. With mercy expunged from her heart and every cruel, ancient power at her command, Angelica vows to annihilate any force that dares threaten her child. This is a dark fantasy of cheat-level, overpowered vengeance—a bloody rampage born from the purest, most ferocious love a mother can possess.