The Reincarnate Became a Professor at the Academy

The Demon King was the supreme ruler of the demons.

The leader of the demon race.

They transcended ordinary existence, chosen by the entity known as the Demon God.

Fragment of the Demon God.

A divine shard split from the Demon God's body. This fragment was bestowed upon the Demon Kings, granting them immortality and immense power.

Such was the essence of a Demon King.

Among the Demon Kings, their statuses and strength varied widely.

Even the Black Flame Demon King, considered the weakest of their ranks, could single-handedly face the Duke of Extermination and a seasoned transcendent.

If the battle dragged on, the Black Flame Demon King would edge close to death.

In other words, merely reaching death, he could face two top-tier beings from the boundary.

'Dangerous.'

Yoo Eunchae swallowed hard.

Sword Demon King.

The Demon King who wielded a sword.

His origin was unusual. A martial artist from the Four Evil Sects who emerged from the dimensional rift after the Bloodshed of Mount Hua.

He stumbled upon the place by accident and got caught in a rift, ending up in the Demon Realm.

He survived there and was acknowledged by the Demon God.

A Demon King of human origin.

This distinction made him even more dangerous.

Unlike other Demon Kings, he was calculated and strategic, never reckless.

While other Demon Kings struggled to control their overwhelming power,

'That guy is different.'

He mastered human martial arts.

Martial arts.

The magnificent divine technique known as Crimson Sky Overlord Godly Technique.

Though it ranked two levels below the Heaven-Surrendering Martial Arts, it was still unparalleled.

Before becoming a Demon King, he was known as a leader in the Four Evil Sects.

Still, there was Han Seojin.

Yoo Eunchae looked at Han Seojin.

His flowing white hair, skin like crystal, and radiant blue eyes gave him an otherworldly beauty.

…No, that was not it.

But more than that, Yoo Eunchae believed in him.

If anyone could stand against the Sword Demon King, it was Han Seojin.

-It's been a while.

The Sword Demon King greeted Han Seojin. There was a hint of joy in his voice.

He hadn't expected to meet him here.

His mission was to disrupt from behind.

To take care of troublesome things from the rear.

He had already taken down two of the top gods known as the Ten Deities.

He had already slain two of the Ten Deities, savoring their divine essence. He had thought it was time to return.

'Lucky me.'

He was lucky.

Here stood the one man he needed to deal with.

It had to be him, no one else.

The ones causing a ruckus upfront were just brute forces.

They could have been missed due to carelessness.

But not him.

Srrrng.

The sword was drawn from its sheath. Even without reaching transcendence, the force of his killing intent alone would spell death for half his opponents.

However.

The Sword Demon King raised his sword.

There were various reasons.

But above all, the blue-eyed being in front of him made him draw his sword.

A being reminiscent of the Heaven-Surrendering Martial Emperor, Han Seojin.

'Curious.'

The longer he observed, the more curious he became.

Han Seojin's posture, his breathing, nothing was discernible.

"I am the former leader of the Four Evil Sects, Joo Hokyung."

"The former leader of the Four Evil Sects?"

"Yes, I was once defeated by the Heaven-Surrendering Martial Emperor, but I went to the Demon Realm and became a Demon King. I am praised as the Sword Demon King, mainly using swords. The most dangerous thing is…"

"Ah, was it that guy?"

At Yoo Eunchae's words, Han Seojin's eyes sparkled.

-Do you know me?

"Of course, I know you well."

Step.

Han Seojin stepped forward.

One step.

It was both heavy and light. Han Seojin opened his hand.

Whoosh.

A gray flame ignited above his palm.

The Sword Demon King's eyes began to widen. His aura trembled. Never had this happened since he became a transcendent.

This meant that the Sword Demon King was that surprised.

'Heaven-Surrendering Godly Technique?'

A being with long, black hair came to mind.

A terrifying man who destroyed the martial world's order with gray, ashen flames.

Orthodox and Unorthodox.

He killed anything that bothered him, without distinction.

When the Sword Demon King was still human.

He had once seen the Heaven-Surrendering Martial Emperor.

-Those damned Chinese bastards…

He had uttered those unpleasant words as soon as he saw him.

Chinese.

He didn't know what it meant, but he knew it was an insult.

And he and the Heaven-Surrendering Martial Emperor had clashed.

-These damn Chinese bastards. Is it reasonable for ten thousand of them to attack just to catch me?

He was somehow filled with anger.

The Heaven-Surrendering Martial Emperor was pursued by both orthodox and unorthodox factions, forming the Heaven's Trap.

Countless martial artists died there.

Perhaps it was fortunate.

He survived thanks to other martial artists.

He survived because he didn't know that the Heaven-Surrendering Martial Emperor was the leader of the Four Evil Sects at the time.

'There was something off.'

Only then.

Only now did the Sword Demon King fully realize that sense of unease.

"What is this?"

Han Seojin stood before him, the corners of his mouth curving into a faint, mocking smile.

"I was uncertain…"

Han Seojin walked forward.

He was still in contemplation.

Here stood a presence he could not defeat alone.

A fragment of the Demon God.

Even if it granted power.

But there was no other choice.

'If he targets others.'

It would be hard to defend. He must attack aggressively.

The three rings nestled within him were fiercely moving.

The god residing in his dantian was on guard, heightening his senses.

-During the Bloodshed of Mount Hua, I thought I was dead.

"Ah, I thought I was going to die too. I didn't expect three old men to try to kill me as soon as they found out I was injured."

-I was truly relieved back then. Before the Bloodshed of Mount Hua, the martial artists of the Orthodox, Unorthodox, and Demonic sects had all gathered.

"Really?"

-Yes, in case you tried to escape, we had set up a net of masters to stop you.

A flicker of flame erupted.

The ashen flame grew stronger.

The sword held by the Sword Demon King began to tremble even more.

"Are you trembling?"

-Trembling indeed. You may not remember, but the memories of that time still haven't faded.

"It's been a hundred years, hasn't it?"

-Still, it is unforgettable. I remember it vividly, as if it were yesterday. The humiliation I suffered from you.

The Sword Demon King spoke through clenched lips.

"What did you say again? I can't quite remember."

Han Seojin furrowed his brow as he dredged up the memory.

Back when the Sword Demon King was still human, few could match his fiery spirit. The memory came back to Han Seojin clearly.

There had been a young warrior who led his men to block Han Seojin's path.

The man had looked strong, confident, and had charged at him alone with a sword in hand.

But Han Seojin had shattered the sword and knocked out the man's teeth.

'And what else was there? I wasn't in my right mind then, so I think I said something harsh.'

-Do you remember?

"I half remember, but I can't recall what I said."

Probably.

What I said back then.

"Was it something like 'damn Chink'?"

"…Isn't that racist?"

Yoo Eunchae's flustered words. Han Seojin chuckled and replied.

"You try going a hundred days surrounded by people trying to kill you. Imagine ten thousand of them closing in, all gunning for your head. I couldn't even eat proper food for a hundred days, just herbs and raw meat. It was maddening."

"What a damn annoying bastard."

"Yeah, that's about right."

'If I had known it was him, I would have killed him beforehand.'

It was regrettable.

Vrrrm, vrrrm, vrrrm!

The Sword of the Demon King trembled. His gaze was solely fixed on Han Seojin.

'Though my intention did succeed.'

It seemed he was even more furious.

'Well, somehow it'll work out.'

Boom!!

Fist and sword collided, unleashing an enormous roar that reverberated across the battlefield.

Ears rang deafeningly, or perhaps the shockwave was simply too overwhelming. The disciples nearby instinctively retreated, unable to withstand the force.

But I didn't care. No, I couldn't afford to care. That Demon King bastard was targeting me.

'This is quite…'

Troublesome.

The Sword Demon King held the sword at an angle. Darkness poured out incessantly from the sword.

The reason I hadn't recognized him immediately became clear—

His temperament had changed. There were similarities, sure, but the demonic influence had transformed him.

'He's more dangerous than he was as a human.'

He was engulfed by demonic influence.

That's why I couldn't recognize it immediately. That darkness seemed as if it would cast all sorts of negative curses if touched.

Limitless Soul.

A presence stirred behind me, a massive, ethereal form began to take shape.

-What an interesting power, were you hiding your strength back then too?

"…"

A black flash crushed down. A cross-shaped slash flying towards me.

I didn't dodge. I swung my fist. Ashen flames collided with the cross-shaped slash.

Boom!

The cross-shaped slash was 'shattered' by the Heaven-Surrendering Martial Technique.

But the Sword Demon King didn't falter.

He moved fluidly, unfazed.

Since I already know that my Heaven-Surrendering Martial Arts possesses such nature.

The pitch-black sword swung toward me again. I stepped forward, accelerating with the Wind God's Steps.

'His strength surpasses mine.'

My magic power was insufficient to match the surging power radiating from him, it dwarfed mine several times over.

However, purity was another matter.

Even if his mana was greater in quantity, its purity was lacking.

Boom!

Once more, his sword collided with my fist, and the ashen flame broke through the black slash.

-…

For the first time, his expression shifted—from a confident smile to a serious, calculating look.

"How is it? You thought you could kill me, but it's not as easy as you thought, right?"

Moving my mouth, I stepped with the Wind God's Steps.

Our speed was nearly equal, no, I was slightly faster.

As I moved, the Sword Demon King prepared another sword strike.

-I underestimated you.

The compressed energy emanated a suffocating pressure.

-It's called Black Heaven Sword Qi.

I could feel its overwhelming force.

By condensing sword qi into threads and compressing them further, it had become a deadly, unyielding force.

I genuinely admired it.

'Even with such talent.'

After rolling around for about 100 years, one would develop some skills.

Back then, I had thought him no smarter than a monkey. Clearly, I had been mistaken.

I put one hand into my robe.

As the greenish spear revealed itself, I rested the spear shaft on my shoulder.

-A weapon?

Ignoring him, I extended my hand toward the Sword Demon King, sending a wave of ashen flames his way.

-Clever trick.

The Sword Demon King swung the sword infused with Black Heaven Sword Qi.

Crack!

The surging firm qi. A part of it was cut.

'Tsk, still difficult.'

Even so, I withdrew my hand and swung the spear.

Kaaaang!!

A sound as if the space was twisting.

The Sword Demon King blocking the spear was looking at me.

-How do you feel?

His eyes were curved like a crescent moon.

"How do I feel…"

To be honest.

Unless I brought out the Heaven-Surrendering Martial Emperor now, I couldn't defeat this guy.

'But.'

Crack.

Lightning sparked. It was a blue light lightning.

The lightning given by the Divine King.

-What is that?

Recognizing it, the Sword Demon King's eyes widened.

"Eat this and die!"

Boom!!

The thunderous sound of lightning tore through the air, streaking toward the Sword Demon King.

-Foolish. I was a bit surprised, but it's just the Divine King's lightning.

It hadn't done much damage.

"Is there no other way?"

I didn't want to use this.

-Are you giving up? You may use your last resort. The magic being prepared by the one behind you. And those ones you seem to cherish.

The Sword Demon King pointed his sword at Yoo Eunchae's group.

He let out a deep sigh.

"Professor, are we going to lose?"

"I want to say we'll win… but I think we'll lose this time."

I looked at her, hesitating.

She was looking at me with trembling eyes.

'Rather than using the Heaven-Surrendering Martial Emperor here.'

Closing my eyes for a brief moment, I opened them again, resolved.

The Sword Demon King was on guard against us, yet his demeanor was relaxed.

"I didn't want to use this."

-Go ahead and use it once.

Raising my arm to the sky, I called forth a twilight-colored light that burst from the heavens.

-Does it even matter? There are two Demon Kings in front of us now. Even the gods would struggle to stop those two.

"What makes you trust those guys and call them here?"

-Then who on earth… No, I'm disappointed, Heaven-Surrendering Martial Emperor.

He lowered his sword and looked at me.

-You've changed during all this time. To give up against an unbeatable enemy. Truly ridicu…

The Sword Demon King stopped speaking.

Then he swiftly turned his head.

With eyes full of disbelief, he was looking beyond the horizon.

"Have you forgotten whose husband I am?"

-No, no way…

Beyond the horizon.

Two streaks of light raced toward us.

"You're done for."

Of course, I called both of them at once…

I smiled brightly.

'You should have been prepared to die.'

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