The Immortal Demon Lord appeared in the River of Time, looking up at the Black River spanning the stream.
Upstream in the River of Time, from the direction of the past, a large amount of black water suddenly surged forth.
The black water transformed into a giant, bursting out of the River of Time, charging into the Black River, and fiercely battling the Demon Monster Saint Ancestor within.
"How dare you!" The Demon Monster Saint Ancestor looked at the charging black water giant, shouting in shocked anger.
Both sides fought ferociously, causing the Black River to shatter, revealing the scene inside.
Five shadowy figures sat within the Black River, forming a circle, with a mass of black mist overhead that occasionally emitted a chilling aura, invoking infinite terror.
Now, under the attack of the black water giant, the five shadows could only spare one to confront the black water giant.
The mist cluster in the center of the Black River seemed unstable after losing one shadow.
Like a hungry monster, about to obtain its food, only for the food to vanish at the last moment.
The mist cluster grew angry, extending a hand formed of black mist to grab a shadow below.
The shadow hesitated for a moment, wanting to retreat to avoid this seemingly ordinary arm, but upon retreating, realized all power was lost and resistance was impossible.
The mist cluster grabbed a shadow, dragging it into the mist, where it silently and completely vanished.
The remaining four shadows stared at the seat of the shadow that had been devoured, and after a long time, their faces fell; it did not revive.
As the Demon Monster Saint Ancestor, one of the supreme beings among demons, it was swallowed by the mist cluster without any power to resist.
After devouring one supreme Demon Monster Saint Ancestor, the mist cluster stabilized, but the remaining three supreme Demon Monster Saint Ancestors dared not relax.
Just losing one source of power had caused their companion to be devoured.
No one knew when the mist cluster might feel hungry again and eat the remaining demons.
As the mist cluster swallowed the supreme Demon Monster Saint Ancestor, a look of surprise appeared on the Immortal Demon Lord's face; he couldn't perceive what kind of creature the mist cluster truly was.
He could only sense that millions of years of darkness and filth had gathered within the mist cluster, and merely a glance could feel one's spirit becoming polluted, one's mind descending, one's divine body decaying.
After hesitating briefly, the Immortal Demon Lord decided to take a chance.
The black water giant ignored the supreme Demon Monster Saint Ancestor before it and charged towards the mist cluster.
The four supreme Demon Monster Saint Ancestors saw the black water giant's actions and were immediately terrified, quickly intercepting.
But as soon as the three supreme Demon Monster Saint Ancestors maintaining the mist cluster disengaged, the mist cluster overhead began to move erratically, scaring them into quickly returning to a distant seat.
They could only watch as the black water giant broke through another supreme Demon Monster Saint Ancestor's defenses, charging towards the mist cluster.
They didn't know what changes the black water giant's intrusion into the mist would bring.
This mist cluster was the supreme entity summoned from demons within the Black River.
Though capable of gazing through the River of Time to witness past and future, they couldn't see clearly what the supreme entity of the demons from the past Black River had done.
They only knew that after this supreme demon entity appeared, the entire world became the image demons desired.
Summoning the supreme demon entity required harsh conditions, needing to destroy more than half the existing world to summon forth the supreme demon entity.
Now it was only the early stages before a true descent.
They feared the black water giant might anger the supreme entity within the mist, injuring them in the process.
The Immortal Demon Lord, through the black water giant, witnessed the world within the mist.
Inside the mist, there was nothing, no demons, no supreme entities, only the overflowing malice of the world.
It seemed as if the entire world had developed malice toward itself.
Beneath the Immortal Demon Lord, the remains of the divine tortoise began to undergo strange changes.
The incredibly sturdy shell of the divine tortoise began melting, sprouting various bizarre objects, the tortoise's head started decaying, spewing out a large amount of flake-like substances.
Black blood seeped from the Immortal Demon Lord's eyes, and upon realizing the anomaly, he severed his connection with the black water giant, stopping subsequent mutations.
But the mutation on the remains of the divine tortoise could no longer be halted, gradually transforming into something beyond even the understanding of the Immortal Demon Lord, becoming a massive source of pollution from which mutations began spreading into the current world.
The Immortal Demon Lord realized he had made a grave mistake.
He shouldn't have attempted to peer into the supreme entity within the mist cluster, as his actions had led to the world's mutation beginning prematurely.
This might lead to the supreme entity among demons descending into the present world ahead of time.
"Moo~" The lament of the divine tortoise echoed from the past in the River of Time, transmitting to the present world, resounding in the Immortal Demon Lord's ears, causing him unbearable discomfort.
The divine tortoise, originally as long-lived as the heavens, possessed immense power; it wouldn't easily fall.
Yet the divine tortoise did fall, becoming a pile of bones, transforming into an island, becoming the foundation of Yunhai City.
It was all due to the Immortal Demon Lord's decision; the remains of the divine tortoise were actually contaminated by the supreme demon entity, causing the past divine tortoise to be polluted, eroded, and fall.
Causality reversed along the River of Time, a feat only the supreme demon entities capable of bridging the River of Time could achieve.
The remains of the divine tortoise had an incredibly profound causal link with the living tortoise.
The remains of the divine tortoise were eroded by the supreme demon entity's power, resulting in the past, at the point where the tortoise was still alive, being eroded by the supreme demon entity's power, leading to its demise, thereby creating the remains of the divine tortoise.
