The Boundary Sea was the most inconceivable sea throughout all history, and one of the most awe-inspiring wonders in this world.
It was boundless, so vast that even Immortal Kings could not see its end. Although its surface appeared fairly calm and tranquil, with only faint ripples spreading across it, it actually concealed endless dangers and murderous threats.
Those seemingly insignificant waves and ripples were the source of the danger-in the rise and fall of the waves, one ruined ancient realm after another bobbed up and down. The spray appeared and vanished; some shattered, some dried up, and some became fleeting bubbles. Those were vast numbers of ruined ancient realms flickering into oblivion.
All this was merely the sight near the shore. If an unrivaled expert gazed into the distance, surveying heaven and earth with divine vision and a Heavenly Eye, they could readily see towering waves in the distant sea that could overturn the heavens, and mighty swells that shook space and time.
Within those towering waves and mighty swells lay even grander worlds. Vast universes almost comparable to the Primordial Ancient Realm appeared within the spray, continually emerging and disappearing amid the sky-high waves.
Such power could annihilate True Immortals in an instant. Even ordinary Immortal Kings could only retreat before it. Only Giants who ranked among the strongest Immortal Kings, along with those few legendary supreme Giants who had lingered in the Boundary Sea for several eras and had not appeared in the world for long ages, could disregard such might and roam freely through the Boundary Sea.
However, although the Boundary Sea was boundlessly vast, it was not truly infinite. If Immortal Kings disregarded the passage of years, they might still reach its end.
Outside the Boundary Sea, near great realms such as the Nine