The Former Demon King Who Was Reincarnated as a Saintess

The most powerful and ruthless Demon King of the demon race, Ivankonsha, led his forces to conquer cities and waged an unprecedented war against humanity. However, amidst the chaos, he grew weary of it all. With the help of the Goddess of Light, he successfully reincarnated several hundred years into the future. Thus, the empire’s strongest Saintess, Illya Joel, was born!