The Reincarnate Became a Professor at the Academy

He was puzzled.

Why were they here? Why did they come as soon as the Heaven-Surrendering Martial Emperor signaled?

He could understand the presence of the Heavenly Demon, but there was one thing he couldn't comprehend.

Why on earth was the Duke of Extermination here?

The Sword Demon King was puzzled, but he instinctively moved his sword.

They moved as if answering his question wasn't worth their time.

Crackle.

Lightning sparked. It was yellow lightning. The Lightning of Destruction. A power that could be said to symbolize the Duke of Extermination.

It was the first to reach the Sword Demon King.

-How dare you!

The Sword Demon King was horrified.

The Duke of Extermination, her power was specialized in annihilation.

She was the one who killed the most Dark Ones at the boundary.

And her other name.

Rapid.

At the boundary, she was the fastest among them all.

The Sword Demon King immediately swung the Black Flame Sword Qi.

Boom!

A sword forged of condensed lightning clashed with his strike. It was in the hands of the Duke of Extermination, blocking his blow.

Drip.

The Duke of Extermination was pushed back. After all, her opponent was a Demon King. It was proof that her power alone wasn't enough to match his.

The Demon Sword King tried to swing the sword once more.

The Duke of Extermination was not the only one present here.

The most dangerous entity was here.

The one deemed the strongest in personal combat.

Heavenly Demon.

Whoosh!!

The world turned upside down as the Heavenly Demon unleashed her full power.

Manifestation of Thoughts.

Domain, Ten Thousand Demon Swords.

Creeping.

A darkness that devoured all began to envelop the area, swallowing everything within its reach.

What emerged were thousands of demonic swords.

Each one was something beyond just firm qi.

The Black Flame Sword Qi wielded by the Sword Demon King was an exception, but the thousands of swords surrounding him rivaled its power.

This was her domain.

The demonic swords covering the sky.

Following her lead, the Duke of Extermination unleashed her own Manifestation of Thoughts.

Manifestation of Thoughts.

Elwen clasped her hands together.

Everything around her began to change.

From her at the center, countless thread-like numbers began to extend.

Thunder Ring Dance.

Above the space created by the Heavenly Demon.

There were countless sparkling threads.

Threads with rings at the end began to spread in all directions.

-You people, you're out of your minds!

The Sword Demon King shouted.

For someone like the Heavenly Demon, her Manifestation of Thoughts could be maintained for an entire day.

But the issue wasn't just her immense power.

It was the sheer arrogance in their actions.

The Sword Demon King had planned to strike swiftly and retreat after killing Han Seojin, the Heaven-Surrendering Martial Emperor.

However, those two offered a different answer.

Unless both of them died, or he died, he could not escape from here.

Their actions conveyed that meaning.

The Heavenly Demon and the Duke of Extermination reached an agreement.

'Let's kill that thing.'

'Let's make the Sword Demon King's tomb here.'

At those arrogant words, the Sword Demon King retorted.

-Even if you try to kill me here, it's useless.

The Sword Demon King unleashed the power he had suppressed until now.

Boom!

The surroundings were swept by a storm of demonic energy.

The Sword Demon King did not like this state.

100 years.

It had been 100 years since he became the Demon King, but this power did not obey his control.

And so, he often thought:

Heaven-Surrendering Martial Emperor.

If it had been him, perhaps he could have effortlessly controlled this power.

'However.'

Though such thoughts crossed his mind in the past, how did the situation stand now?

The Heaven-Surrendering Martial Emperor couldn't handle himself and called for allies.

Even with those two allies combining their strength, he, the Sword Demon King, would not be defeated.

He was certain of it.

-Manifestation of Thoughts.

Squelch.

A sound like something opening its maw echoed.

The Sword Demon King pondered for a moment.

Should he use his domain to transform the battlefield to his advantage?

Or should he destroy everything with a single strike from his Manifestation of Thoughts?

'First…'

Destroy the domain.

The Heavenly Demon's domain was troublesome enough, but the Duke of Extermination's Manifestation of Thoughts within it was even worse.

Hell Demon Sword.

The Sword Demon King drew the largest greatsword he possessed.

He wanted to kill the Heavenly Demon, the Duke of Extermination's Manifestation of Thoughts, and even Han Seojin.

He poured his intent into the sword.

The Hell Demon Sword let out a haunting wail—

Its massive blade, easily over 100 meters long, loomed like a harbinger of the apocalypse. A weapon destined to bring the world to its end.

Thousands of demonic swords and countless brilliant threads filled the sky.

And his sword sought to cut them all down.

The scene resembled the end of the world itself.

────────────!!

When they clashed, the overwhelming force was so immense that even sound seemed to vanish.

I moved swiftly. My movements remained light.

The Wind God's Steps guided me.

Whoosh!

The wind blew, opening a path before me. The Wind God's Steps, swift and unparalleled.

Of course, not as fast as Elwen using Manifestation of Thoughts and the Thunder Ring Dance.

I opened my eyes, and the Heavenly Eyes activated.

My Heavenly Martial Body absorbed the magic in the boundary.

I took out the Demon God's flesh and looked at it.

This time, it didn't react much.

When it saw the Black Flame Demon King, it had reacted so violently.

'What on earth is it?'

What kind of creature could it be?

For some reason, I kept feeling that this thing was 'alive.'

'Should I eat the fragment of the Demon God now?'

The fragment of the Demon God I obtained after killing the Black Flame Demon King.

If I consumed it, I could immediately transcend.

However, the risk was still significant.

Because although I was continuously purifying it with the power of the Morning Star, the demonic energy the Black Flame Demon King possessed was intense.

Though the demon was weak, its demonic energy clung to the fragment of the Demon God, making purification difficult.

And I have no intention of falling ill by consuming a fragment of the Demon God filled with demonic energy.

'It wasn't as impressive as I thought.'

No, that wasn't entirely true.

If it weren't for the fragment of the Demon God, I might not have been able to kill him.

But if it was a matter of life or death, it was better to consume it now.

'At least it's something I can purify.'

I clenched my fist as I dashed forward using the Wind God's Steps.

Squeeze.

Behind me, the Limitless Soul moved. The Ultimate Art, Divine Thunderbolt, imbued with starlight.

The black lightning, now wrapped in starlight, transformed into golden lightning.

As I stepped into the Heavenly Demon's domain, what lay before me was nothing but ruin.

Elwen and Cheon Murin clicked their tongues and retreated, while in front of them, the Sword Demon King was seen rampaging with demonic energy.

The former leader of the Four Evil Sects.

After several clashes, I came to understand, his martial arts hadn't changed much. While he had infused them with demonic energy and made some adjustments,

'The foundation is the same.'

I breathed and prepared. The Ultimate Art, Divine Thunderbolt, imbued with starlight.

A lightning bolt cloaked in starlight, golden.

And here.

'Add the lightning of the Divine King.'

I had learned how to handle it.

Perhaps it's better to say I'd begun to master its intricacies.

So I combined the lightning of the Divine King.

Crackle!

Blue and gold merge. A state where three powers are combined.

I transformed it into the form of a spear.

And then—

Rumble!!

Lightning mixed with blue and gold light. It struck down.

Crackle!

-Kuh-heok!

The Sword Demon King groaned. It seemed to have quite an impact, but…

'This is completely different from the Black Flame Demon King.'

Back then, he almost died from a single punch.

But this time? All it managed was to numb his body slightly and elicit a scream.

Divine Thunderbolt, Starlight, the Divine King's lightning.

Even with all those combined, it was like that.

-You.

Thump.

My heart pounded. His murderous intent was directed at me. Darkness.

The darkness he possessed began to clearly bear hostility.

Thump.

My heart throbbed. I stepped forward.

"Seojin…"

"Are you okay?"

Cheon Murin and Elwen looked at me with worried eyes.

I smiled.

"I'm fine."

I swallowed the words I wanted to say, 'Thanks to you for coming quickly.' Now was not the time for such sentiments.

Thump thump.

My heart was pounding. The Sword Demon King was walking towards me.

I held a sword. I held a spear. A spear in my right hand, a sword in my left.

Ashen flames flickered to life. While Divine Thunderbolt boasted immense destructive power, it wasn't suited for the current situation.

It also took a long time to prepare.

It had the advantage of being able to overlay the Morning Star, but its disadvantages were too clear.

I stepped forward.

-You.

The Sword Demon King had removed his conical hat. The aftermath of the fight. That caused the hat to be taken off.

His expression was as if he wore a mask.

A skull mask.

His face was in a bizarre form as if bones were jutting out.

I rushed forward.

Boom!

I swung my spear. It clashed with the Heaven-Surrendering Firm Qi and his Black Flame Sword Qi.

An overwhelming sound. But I was the one being pushed back.

'His strength is superior.'

A bit more.

I pressed onward, stepping with the Wind God's Steps, as the Sword Demon King thrust his sword at me.

I countered with my own, smoothly redirecting his attack using Wielding Sword, a technique from Harmony Between Heaven and Earth, a martial art akin to divine power, capable of altering anything.

-Hmm?

Without hesitation, I thrust my spear forward.

Heaven-Surrendering Godly Technique.

Dominating Soul of the North Wind.

A crescent of ash extended from the spear, slashing through the Sword Demon King.

Swoosh.

His clothes were torn, and blood spurted from the gash created by the ashen crescent.

Splat!

However, the Sword Demon King was readying a counter.

'Immortality.'

The basic immortality possessed by the Demon King. Ordinary attacks were suppressed, and wounds healed.

It didn't matter.

The Limitless Soul moved. The Divine Thunderbolt struck down.

Boom!!

The black lightning exploded on his body.

-Kuh!

The dark thunderbolt deepened his wounds. I dashed forward, hurling my sword directly at him.

Clang!

He immediately deflected the sword. He raised his fist. A gray flame swirled around his fist.

The sword came in. I evaded using the Wind God's Steps. But the surrounding darkness, imbued with killing intent, approached me.

'It's okay.'

Crackle!

Celestial Lightning. Elwen, boasting the fastest speed here, blocked the sword energy.

Cheon Murin arrived a step late. She was shrouded in darkness.

Crack.

Darkness lingered on her sword. It wasn't the vile and unpleasant darkness of the Sword Demon King; it was the overwhelming void of the Heavenly Demon's Godly Technique, a darkness that could erase and devour everything.

Kwaaang!!

She deflected the Black Heaven Sword Qi of the Sword Demon King. Taking advantage of the opening, I swiftly advanced using the Wind God's Steps.

'Quickly.'

Bang!

I gouged the wound left by the Black Thunder with my fist.

Once more.

Kwang!!

-Kugh!

More of his flesh tore away, but it still wasn't enough.

Kwaaang!!

One more strike. Finally, the Sword Demon King reacted, slashing his sword downward with immense force.

I narrowly evaded using the Wind God's Steps.

Srrrrk.

Black Heaven Sword Qi. The power called by that name began to expand greatly. Like a cloud, the darkness grew in size.

It was about to attack me.

"Are you not paying too much attention to my husband?"

But the fact that he attacked meant…

Cheon Murin found an opportunity to attack.

Pitch-black darkness enveloped her sword.

Creak!

Her blade tore into his flesh, sparks of black flame igniting upon contact. It was proof that the Heavenly Demon's Godly Technique was suppressing the Sword Demon King's immortality.

-Kuhhh!

At that moment.

Something sacred began to emerge.

'Holy Power?'

Gods.

The collective faith they held.

Holy Power.

The creature possessed it. For what reason, I did not know.

But that thing.

'The Holy Power possessed by gods neutralizes Demonic Qi.'

Their power, in a way, was the natural enemy of Demonic Qi.

Demonic Qi.

It was the negative power held by people.

Holy Power.

It was the power of belief held by people.

I looked around.

Elwen and Cheon Murin were pressing the Sword Demon King in a joint attack, but it was still not enough.

I, too, lacked the decisive blow needed to finish this battle.

However, we could buy some time.

In that case.

'The most certain method to kill the Sword Demon King here.'

There were two.

Manifestation of Thoughts, Kaleidoscope.

That was what they called the power of the Heaven-Surrendering Martial Emperor.

However, it seemed Elwen, Cheon Murin, and the Sword Demon King had yet to notice.

'There is a gaze.'

Very.

A very faint presence. Even I could only discover it by chance.

The power of the Morning Star.

When I used it, a faint feeling of surprise emerged.

'If I bring out the Heaven-Surrendering Martial Emperor, I can kill the Sword Demon King.'

But I still didn't know what that unknown entity was. If it was an ally, there's no problem.

…The probability of being an enemy was higher.

So I reached out.

Holy Power lingered in my hand. And I took out the fragment of the Demon from my bosom.

It still pulsed with seething Demonic Qi.

And I swallowed the Holy Power and the fragment of the Demon whole.

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