The Blood Sky Sword God took control of Zhou Yu's body, and then, the longsword in his hand quivered instantly.

Suddenly, a blood-red Sword Radiance burst forth from the blade.

Upon closer inspection, the reason the Sword Radiance appeared blood-red was that a layer of flame was burning on its surface.

As the sword swung out.

The overwhelming demonic qi unleashed by the Black Abyss Demon Emperor was instantly swept away.

The face of the Black Abyss Demon Emperor was filled with extreme anger and gloom.

"It's that cursed Blood Soul Prison Fire again!"

The Blood Soul Prison Fire is an extremely rare flame that can only potentially arise in places with a heavy death aura, after a thousand years of phosphorous fire burning.

It is also the unique mark of the Blood Sky Sword God.

The Blood Soul Prison Fire can burn away all existences with extremely yin attributes.

Even the Dark Clan's demonic qi is no exception.

Ten thousand years ago, it was precisely this Blood Soul Prison Fire that caused great damage to the Dark Clan.

Even he, the Black Abyss Demon Emperor, was severely wounded by this fire.

Therefore, he remembers this fire vividly!

At this moment, the Blood Sky Sword God let out a cold laugh.

"Black Abyss, it's been ten thousand years since you last tasted this fire, hasn't it."

"Today, let you savor it once more."

As he spoke, the Blood Sky Sword God swept out with his sword horizontally.

Simultaneously, a blood-red Sword Domain unfurled instantly, and in the blink of an eye, it enveloped an area of several tens of kilometers.

Within that blood-red Sword Domain, Blood Soul Prison Fire transformed into hundreds of Fire Dragons, wantonly flying about, burning away all the dark demon qi in its path.

This scene left Zhou Yu utterly astonished.

He knew that the Primordial Spirit of the Blood Sky Sword God resided within him, allowing him to experience everything the Blood Sky Sword God did.

The moment that Sword Domain expanded, Zhou Yu instantly felt that it encompassed the entire world.

It seemed that if he just willed it, he could destroy a world.

This was simply incredible.

Is this truly the power of the renowned Blood Sky Sword God from the Ancient Times?

The realm of this Sword Domain has likely reached the peak of the ten heavens.

Meanwhile, the Black Abyss Demon Emperor was also enveloped within the Sword Domain.

He desperately activated his demon body to contend with the countless Fire Dragons.

In an instant, a fierce battle erupted across the entire Sword Domain.

Facing the peak Sword Domain of the Blood Sky Sword God, the Black Abyss Demon Emperor dared not be careless.

At this moment, he unleashed his full power, as the demon patterns on his demon body flickered, and it grew to a height of five zhang.

Each punch he threw could instantly shatter more than ten Blood Dragons.

Such a terrifying fist force might severely wound a human Ancestor Realm expert.

However, the Black Abyss Demon Emperor could unleash dozens of punches continuously without showing any sign of exhaustion.

Upon witnessing this, the Blood Sky Sword God snorted coldly.

"You do have some staying power!"

"Then taste this move from me!"

The Blood Sky Sword God immediately raised the longsword in his hand.

Simultaneously, a voice rang in Zhou Yu's mind.

"Young friend, this move was realized by me over these ten thousand years."

"It's called the Sunrise and Sunset Sword."

"Ten thousand years might be just an instant of sunrise and sunset."

"This sword encompasses my lifelong insights into the Sword Dao, and with my current state, I can only perform it once. You must carefully comprehend its essence."

When the Blood Sky Sword God spoke, his tone was filled with yearning and regret...

Zhou Yu could clearly sense that the Blood Sky Sword God had many sorrows in his heart, yet he no longer had the chance to speak of them.

Zhou Yu was shaken and immediately said:

"Yes, senior!"

The Blood Sky Sword God nodded slightly, then he slowly raised the longsword in his hand until the blade was level with the Black Abyss Demon Emperor's head.

The Black Abyss Demon Emperor, busy dealing with the myriad Fire Dragons, suddenly shuddered as an inexplicable sense of impending death surged from his heart.

The Black Abyss Demon Emperor immediately looked towards the Blood Sky Sword God.

Upon seeing that the sword in the Blood Sky Sword God's hand was aimed directly at him, the feeling of unease grew increasingly strong.

The Black Abyss Demon Emperor immediately let out a thunderous roar.

In an instant, the demon patterns on his demon body flickered rapidly and then exploded completely.

The demon patterns are the source of power for the Dark Clan's demon body.

Detonating all the demon patterns is akin to human Martial Artists burning their entire Essence Blood.

Its power immediately became like a nuclear explosion.

Boom!

A terrifying force erupted from the Black Abyss Demon Emperor's body, shaking the heavens and the earth.

The Black Abyss Demon Emperor appeared to be in excruciating pain, even to the point of a distorted expression.

Yet, even so, he propelled his demon body and fiercely punched the sky.

Buzz!

A wave of black energy burst forth, shooting straight into the sky.

In an instant, the entire sky appeared like a shattered mirror, suddenly crisscrossed with countless dense cracks.

Meanwhile, the Sword Domain of the Blood Sky Sword God was instantly broken.

Immediately after, the Black Abyss Demon Emperor let out an earth-shattering roar.

He transformed into a black shadow, charging straight towards the Blood Sky Sword God.

Simultaneously, he threw another fierce punch.

At this moment, the Blood Sky Sword God moved.

He gently thrust out the longsword in his hand.

A faint silver glow emanated from the blade.

This sword appeared utterly ordinary.

Especially in the eyes of onlookers, it resembled a novice swordsman raising a sword to stab a scarecrow.

But in Zhou Yu's perception, he was utterly amazed.

At the instant when the Blood Sky Sword God unleashed this sword, he felt that everything around him changed.

In an instant, he felt as if he had stepped into a time tunnel.

Numerous scenes passed by Zhou Yu at high speed.

The speed was so fast that Zhou Yu couldn't see clearly.

He only vaguely glimpsed that some scenes seemed to depict the life of the Blood Sky Sword God.

And this scene lasted but an instant.

Immediately thereafter, in front of Zhou Yu appeared the look of terror on the face of the Black Abyss Demon Emperor.

Puff!

This sword directly shattered the full-force attack of the Black Abyss Demon Emperor.

And then, it fiercely pierced into his brow...

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