Before  the Grace Period, the Soul World flourished with advanced technology, prosperity, and harmony, what many called true world peace. Cities thrived, nature was nurtured, and humanity stood at the peak of progress.

At first, the project was a success. But as time passed, The Essence began to grow, far beyond expectations. It became a towering giant, its expansion uncontrolled. Then, the catastrophe began.

A strange black energy formed around the tree. Plants near it withered and turned to stone, while others simply perished. Soon, entities born from soul energy emerged, shapeless at first, but rapidly evolving into creatures with distinct forms. These beings, later called the Soulth, spread like wildfire.

The Soulth fed on human energy, and within days, 40% of the world's population was wiped out. The world teetered on the brink of extinction. Then, at the height of the crisis, The Essence mysteriously exploded.

The aftermath was cataclysmic. The very structure of the world changed, lands split apart, environments twisted into unfamiliar landscapes. Some regions became habitats for the Soulth, while others remained as the last safe havens for humanity. Unnatural phenomena emerged, reshaping the world as it once was.