An ancient monastery once radiated sacred brilliance and protected the world. Then dark forces corrupted the sun and reduced it to ash. Demons swarmed across the land, spreading suffering to every living thing. When the darkness was at its worst, a nun chosen by fate stepped forward — bearing the sacred mission of purifying the world and driving the demons back. Take the role of this Black Nun and embark on a journey through an Age of Ashes, writing your own chapter in the history of a world fighting to survive.