Onimotsu to Yobareta Tensei Hime wa, Shoukan Yuusha ni Koi wo Shite Seijo ni Narimashita

In a realm where magical aptitude dictates one's right to rule, Reya is reincarnated as a princess completely devoid of magic, forcing her to endure a life cast in the shadows. For years, she remains marginalized within the royal hierarchy until a miraculous discovery changes her fate: she possesses the rare, legendary purifying power characteristic of a true saint. Recognizing her extraordinary ability, the neighboring empire recruits Reya to assist Kazuya, a powerful summoned hero tasked with overcoming monumental perils. Thrilled at the prospect of finally being useful to others, Reya embraces her new duty, only to find that the celebrated hero treats her with a peculiar coldness and emotional distance. This compelling tale follows the journey of an unappreciated saint and the strongest hero as they forge an uneasy alliance, navigating personal distance and emotional barriers while working together to save the world and discover love.