Izabella Voldigoad, born Izabella Raizeo, is a human woman whose fervent prayers with her husband Gusta revive their stillborn child, channeling the soul of an ancient demon king into the unborn fetus. Though predominantly human, distant threads of demon ancestry linger in her bloodline. After settling in Dilhade, she adopts the surname Voldigoad to signify her family’s transformed legacy.

A respected appraiser of precious metals, her discerning expertise garners acclaim among jewelers early in her career. She further hones culinary talents, mastering dishes like the mushroom gratin cherished by her child. Her nurturing demeanor centers on fierce loyalty to her family and a principled protectiveness that embraces even strangers.

When imperial students attack Emilia Ludwell, a half-demon persecuted for her heritage, Izabella acts swiftly. She weaves the intricate defensive spell Kago to safeguard her household, balancing its volatile magic through meticulous focus. With Gusta subduing the assailants, she secures Emilia’s escape and later tends to the girl’s wounds, embodying her steadfast empathy.

Izabella’s past mirrors tragedy turned to mysticism: years of failed pregnancies culminated in her child’s stilled heartbeat, reversed only when her desperate invocations drew the demon king’s soul into the womb. This act intertwines her fate with Luna Voldigoad, the demon king’s mother in his prior life, though Izabella’s awareness of this echoes as an unspoken intuition. Her choices and latent lineage ripple through the series’ exploration of rebirth and inherited legacies.