Requiem of Reuinis - the brilliant civilization of the old era was reduced to ash in the Calamity. Now, guided by the Church, humanity has gradually built a new order for a new age. The holy scriptures define that chapter of history as punishment for defying the gods, and any attempt to explore it has become an untouchable taboo. Yet as natural disasters grow frequent and monsters run rampant, cracks have begun to form in this fragile peace. On a stormy night, a young noblewoman named Tasia stumbles upon a hidden cave entrance. This forgotten place may hold the truth behind the Calamity.