This world consists of countless fragmented space segments, each fragment containing varying sizes of land, rivers, and even oceans. Within these fragments, relics of ancient civilizations from ages long past are often discovered. The indigenous inhabitants vividly refer to these space fragments as "Lost Worlds." Over time, as civilization has developed, these Lost Worlds have become part of the locals' daily lives and even the homeland for some rare races in this world...
This is essentially all the information we have about the Lost Worlds of this world until today.
However, today, an unforeseen ancient mystery has suddenly surfaced from these seemingly unremarkable Lost Worlds. Everything is bewildering, without any clue, leaving people grasping at straws. Yet, the various facts exposed so far have already put everyone on edge: instinct tells us that we are on the verge of uncovering an unparalleled secret.
