Twin Ocean, a special maritime area located among the Southern Islands of the continent.
Just like its name "Twin", the seawater in this area is like a pair of twin siblings, different in color yet coexisting distinctly.
On one side is the clear and transparent reflection of the blue sky, while the other side presents a brownish-red color akin to rust and clay.
The two colors of seawater do not mix, not even a buffering zone of mixed colors exists, but a tangible boundary line, like "oil" and "water", divides them distinctly into two parts.
From a high altitude, it looks as if some invisible force has forcibly stitched these two completely different maritime zones together, odd and peculiar.
Nobody knows the reason for the birth of such a natural scene. Since the first adventurer from Suo Yu Bay set foot here, this area has always been this way.
Some have inquired about the situation from islanders residing around the adjacent seas for generations, but each account differs.
