City-State floated rootlessly on the Endless Sea. Beneath the 850-meter "thick" base lay seemingly endless dark waters that grew only noisier and more visually incomprehensible the deeper one went. The first explorer to cross a thousand-meter depth in the sea went mad after rushing to the surface, leaving only one sentence for posterity—
"We all died there."
This is what happened during the Frost City-State's "Abyssal Expedition" as things gradually started to go awry.
Duncan fell into a moment of brief contemplation. He suddenly realized that even without delving deep into the Spirit Realm or the profound depths, just within this "real dimension" of the world, the dangers lurking in the Endless Sea were not few. After his brief contemplation, he then suddenly asked,
"What became of that explorer later?"