The ocean border remained silent for five days.
Five long days.
After Leviathan and the sea clans retreated into the fortified city, the entire abyssal trench became strangely empty.
Only Zero remained outside.
Alone.
The dark ocean currents twisted endlessly around the border cliffs while black spiritual fluctuations occasionally rose from the abyss below like smoke leaking from hell itself.
And in the middle of that terrifying silence—
Zero worked calmly.
Formation flags floated around him one after another while countless ancient runes spread through the ocean floor. Spiritual pillars emerged beneath the sea, connecting into massive circular patterns extending hundreds of kilometers across the border region.
The formation itself was absurd.
One Thousand Immortal Shield Formation.
Even among immortal-level defensive arts, it was considered monstrous.
Normally—
creating such a formation required at least three True Immortal prodigies working together.
