Anime World

A vertical hole with an opening diameter of around 2,000 meters and speculated to be over 40,000 meters deep. It possesses a unique ecosystem, wherein lie the remnants of an ancient, yet advanced, civilization. Many have challenged the mysterious Depths, pursuing countless hidden treasures and relics of immense value. Some are treasure hunters looking for Artifacts, while others are explorers determined to unveil the secrets The Depths hides. To explore The Depths, valiant cave raiders called Descenders emerged, and the city of Avalon was established at its edge. The Depths still contains many sections that have never been seen, and carries many dangers. Hazardous habitats that defy common sense and otherworldly creatures adapted to the unique environment are major obstacles to explorers.

A vast vertical hole stretching far into the darkness, with jagged rock formations lining its walls and glowing bioluminescent plants clinging to the edges, under a swirling mist that obscures the bottom.