In 'No, I Said it’s Mental Immunity', a damaged Guardian Demonic Sword leads to unexpected consequences for the protagonist. As they navigate the challenges of absorbing demonic energy, moral dilemmas and intricate plot twists abound in this Korean web novel. With a blend of action, adventure, comedy, and supernatural elements, readers will be drawn into a world where corruption and cunning protagonists clash in a story filled with psychological depth and slow-burn romance.