Deep Sea.
This was the deepest part of the sea. In the legends of the Thousand Island culture, this place was connected to the demon's nest and was the most dangerous place in the world.
Any light would be devoured here. The sea floor was so dark that one could not even see one's fingers. The seawater was so cold that it was bone-piercing. The seawater that should have been soft was squeezing flesh and blood like a knife under the extremely strong water pressure.
However, what made the Abyssal Sea even more terrifying was far from these ordinary appearances.
If a school of fish or powerful sea creatures were lucky enough not to be torn into pieces by the water pressure, they would suffer an even more terrifying attack.
It was a whisper from the demons in the Abyssal Sea.