Vengeful Saint of the Demon Castle

Sayuri Mizuno, an ordinary college student, never imagined her life would change so drastically. One evening, as she was walking home, a blinding light surrounded her, transporting her to a medieval fantasy world.

Summoned by a group of desperate mages, Sayuri is chosen to become the Saint, a divine figure tasked with aiding a group of adventurers in defeating the Demon King. With her healing powers and sense of duty, she joins Kieran, the charismatic swordsman, along with Yara, a powerful mage, Darian, a calculating archer, Vorn, a fearless warrior, and Lyra, a cunning rogue.

Despite feeling out of place in this strange world, Sayuri devotes herself to her role, determined to protect her companions. As they journey together-battling monsters, exploring dungeons, and growing closer-Sayuri starts to believe in the cause. However, as they reach the Demon King's castle for the final battle, the unthinkable happens: her companions betray her.

Left gravely wounded and abandoned in the Demon King's castle, Sayuri is forsaken by those she trusted. But as she bleeds in the darkness, a surge of dark power awakens within her. The Saint she once was is no more. Now, she is the heir to the Demon Queen's legacy-fueled by vengeance.

Transformed and driven by hatred, Sayuri begins her journey of revenge. She will rise from the ashes, commanding fiends and wielding devastating magic. While her former companions are celebrated as heroes, Sayuri will tear down the world they built and make them pay for their betrayal. No one will escape the wrath of the Demon Queen.

Vengeful Saint of the Demon Castle is a dark fantasy about betrayal, transformation, and the thirst for revenge. Sayuri Mizuno's journey will be one of power, vengeance, and justice as she sheds her saintly past and embraces her dark destiny.