Alicia has spent years as the kingdom’s saint, wielding holy magic to fight the demon king’s army and protect her people from the ongoing war. Her devotion is absolute, and her fiancé, the prince, stands beside her as a symbol of the realm’s hope. But the moment the war begins to wane, the prince and his secret mistress, the false saint Flaura, frame Alicia for treason. Fabricated evidence brands her a witch colluding with the enemy. She is thrown into prison, subjected to brutal treatment, and finally dragged to the public square for execution. The very citizens she saved gather to jeer and cheer as she dies, their malice stripping away her last shred of faith.

In her final moments, Alicia curses the kingdom and wishes for its complete destruction. She dies—only to awaken in the demon king’s fortress. The demon king, rather than killing her, has resurrected her and granted her new power: the light of a saint fused with dark magic. Now reborn as a fallen saint, Alicia retains her gentle demeanor but gains a cold, sadistic edge directed solely at those who wronged her. She allies with the demon king, who seems to have his own interest in her, and sets out to dismantle the kingdom piece by piece.

The story unfolds on two fronts: the ongoing war between the human kingdom and the demon army, and Alicia’s personal mission of retribution. She confronts Flaura on the battlefield, using her crucifixion of holy and unholy magic to terrify her former comrades. Later arcs introduce her old squadmates, whom she must decide whether to spare or destroy, and deepen the political scheming behind her betrayal. The demon king’s motives remain ambiguous, and Alicia must navigate her new role as a weapon of vengeance while grappling with fragments of the saint she used to be. The narrative balances brutal combat, psychological torment of her enemies, and the slow unraveling of the kingdom’s hypocrisies.