The Reincarnate Became a Professor at the Academy

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BOOOOM!!

Fortunately… or should I say.

Nothing happened between us.

Precisely at the moment something was about to happen.

A tremendous explosion echoed across the boundary.

"…I think we should go."

"Mmh, fine…"

I could feel the Duke of Extermination's anger. Though, I hoped she'd handle it carefully.

'She won't bite, right?'

Even for me, it's tough if I get hurt there.

I kissed her cheek and forced myself to stand up.

I didn't kiss her lips; she had been biting them just a moment ago.

It was a bit crude to say, but it was kind of gross.

I tidied my pants and stood up.

"Is the boundary usually like this?"

"…This is normal. This place is a battlefield."

The Duke of Extermination nodded as she spoke.

However, she added as she continued.

"But such cases are rare. Because this place is the boundary. Here, battles are stagnant."

"Indeed, you can't freely create transcendents or gods."

If it was not an extraordinary power, it would be evenly matched.

"And the one rampaging now is also the most dangerous Demon King."

"The most dangerous, you say?"

"Yes… he's extremely adept at facing multiple opponents."

"He's similar to you, then."

"Yes."

The Duke of Extermination was strong.

However, she was strong when there were many enemies.

The technique she possessed, Extermination Thunder.

It was similar to my Divine Thunderbolt.

The power containing the starlight might surpass Extermination Thunder.

'It wouldn't be surprising if the Duke of Extermination has also improved.'

Perhaps she didn't know she held the power that reached the third circle, as I had died as the Purple Tower Master, Han Seojin.

'I have three circles now.'

This was a kind of trick made from the heart of a dragon.

"Why is that?"

"…Because you're beautiful."

"Hoo, I guess it can't be helped."

The Duke of Extermination smiled, saying there was no other choice.

Her eyes, looking at me, seemed to form hearts.

'This is a bit dangerous.'

How much would I be drained once this fight ended?

If we were on the same level, I'd always win, but right now, my level was lower.

'By my estimation, she seems to be mature even among the Transcendents.'

Transcendents were divided into novice, intermediate, and mature.

In my past life, all the realms I achieved were mature.

Novices were beings like malevolent spirits.

'I haven't seen an intermediate yet.'

"I guess I'll have to move first…."

"Shall we?"

Crack.

Lightning began to spark around the Duke of Extermination.

"Lightning Transformation."

The Duke of Extermination's body was made of lightning.

"I'd like to go together… but you can keep up, right?"

The Duke of Extermination gave a provocative smile.

I chuckled softly.

Who was it that was so anxious when they couldn't catch me the first time I ran away?

But I didn't say anything.

If I mentioned it, she would be extremely sulky.

Confident in her skills, yet she was sulky for a month as soon as I surpassed her level.

Crackle!

The Duke of Extermination transformed into lightning and dashed toward the disturbance.

I exerted Wind God's Steps with full power and thought.

'Did they say most of the demon kings are here?'

And there might be some familiar faces.

The Duke of Extermination didn't say it, but I heard it from the emperor and other people.

The dukes of the empire.

And maybe even the transcendent ones from the unorthodox faction.

'How about you?'

Would they be able to recognize me?

The Duke of Extermination and the Heavenly Demon will have no choice but to recognize me.

Because of the Divine Thunderbolt and Heaven-Surrendering Godly Technique I possessed.

They were the ones who observed them closest.

Even if my appearance changed, I was certain that those two would recognize me no matter what.

However, others would not.

'Will I be able to see them after a long time?'

Those familiar faces.

Dark Flame Demon King.

The Demon King who wielded dark flames was granted the power of 'contagion' by the Demon God.

His flames were contagious.

And the flames he possessed were terrifyingly destructive.

That was what made him so dangerous.

He excelled at dealing with numerous transcendents at once.

-Kwahahaha, damn you all! I'll burn everything to ashes!!

Unlike other Demon Kings, he did not possess what could be called an all-powerful force.

He was born that way.

While other Demon Kings became such by killing their enemies step by step.

He became a Demon King simply by burning everything around him.

Therefore, he was the most dangerous of all Demon Kings.

The Insect Dragon King possessed the most magical power among the Demon Kings.

If the Duke of Extermination was the most troublesome demon king.

He was the most dangerous demon king.

A flame that incinerated everything. He unleashed it indiscriminately.

A flame feared even by transcendent beings and gods.

Infernal Blaze.

A power said to be capable of destroying the world.

That was the power he wielded.

No, he was merely swayed by that power, like a strategic weapon—like a nuclear bomb.

He incinerated everything, regardless of friend or foe.

Therefore, the demon kings devised a strategy.

Usually, no one could approach him.

But if war broke out, they dropped him in the midst of the enemy.

That method possessed such overwhelming power that even transcendents and gods paid close attention.

"But I didn't expect him to show up suddenly."

"Look at that. One of the gods from the Hundred Gods is burning well."

Aaaaargh!!

A god caught in the Infernal Blaze was letting out a horrific scream.

The transcendents clicked their tongues as they watched the Dark Flame Demon King.

"I've heard of strategic weapons, but I didn't expect this…"

"How does it look? Stronger than the Insect Dragon King?"

At someone's question, Maeda Atsuko tilted her head.

'Is it dangerous?'

She looked at the Insect Dragon King.

But it was clearly weaker than the Insect Dragon King.

If that being were ten times stronger, it might resemble the Insect Dragon King she last saw.

"It's weak."

"…Weak?"

"The last appearance of the Insect Dragon King was much stronger than that."

"What on earth happened in the middle realm?"

"By the way, it seems more harmful than before. Did it finish its revenge? I heard it bore a grudge against a family ruling a small country called Korea."

"Iron-Blood… something, I recall."

"Iron-Blood Sword Clan?"

"Ah, that was the name."

Saying that, she stepped forward.

"More importantly, that thing needs to be stopped here, or it'll be dangerous."

"Can we even stop that? Without the Heavenly Demon, it seems a bit tough. But if it reaches the base, we'll have no choice but to stop it as it will burn everything."

-Kahaha, do you think the likes of you can stop me!

As soon as the Dark Flame Demon King spoke, black flames filled the sky.

Infernal Blaze.

Huge black flames covering the sky.

They gathered as if forming clouds.

-This is the Infernal Blaze of hell!!

Flash!

At the moment the king was about to lower his hand.

Crash!

Something struck down.

A movement like a lightning bolt descending.

Simultaneously, the Dark Flame Demon King's body stretched like rubber.

-Kuhurk!

An unreal scene. The Duke of Extermination, who struck down, was enveloped in the Extermination Thunder.

Rumble!!

Dazzling blue lightning exploded.

It was a tremendous sight.

Everything around seemed to be engulfed by lightning.

The Extermination Thunder possessed by the Duke of Extermination obliterated all the black flames of the Dark Flame Demon King.

However, the Dark Flame Demon King was preparing a counterattack.

A demon king fundamentally did not die easily.

Even after dying, dying, and killing, it regenerated like a regenerating tentacle.

Han Seojin thought it was possible to kill the weakened king.

But that creature did not die properly.

Heaven-Surrendering Godly Technique and Divine Thunderbolt.

Even using those, demon kings were beings that did not die easily.

That's why the Kaleidoscope was employed.

The same was true for the Dark Flame Demon King.

The power granted by the Demon God inherently provides immortality.

Even when killed repeatedly, it doesn't die easily.

It had to be so.

…However.

'What, what is this?'

The Dark Flame Demon King felt an unknown fear.

It was natural.

It had been 100 years.

She had spent a longer time alone than that.

A century was an unbelievably long time.

Among the women who liked Han Seojin during that time, some pretended to forget him and married other men.

She endured that long time alone.

She could endure it.

By reminiscing about her memories with Han Seojin.

But then she met him in person. They almost went all the way after so long.

As the suppressed desires began to erupt, the Duke of Extermination reached a higher state──.

But she couldn't quite reach it.

The mature state of transcendence.

Only a handful of people in the universe have seen beyond that.

An immense desire only made the wall slightly thinner.

But even with that, she could half-kill the Demon King.

Boom! Bang!

Han Seojin was witnessing that scene belatedly.

'That's a big problem.'

Everyone was staring blankly at the Duke of Extermination, realizing just how dangerous it was to genuinely strike the Demon King.

"What did you do?"

A somewhat androgynous voice.

Long hair, blue eyes.

Neo Seunghwa, who was awkwardly imitating the Heaven-Surrendering Martial Emperor, stood next to me.

"That's something I… well, I did do it."

"What on earth did you do to make that woman go even crazier?"

"…Ahem."

I almost got caught in a storm of passion.

No, it was more like I almost succumbed.

But mentioning that to others felt unnecessarily embarrassing.

'More importantly, that.'

Whatever it was, the Demon King would sustain some injuries.

But I wasn't sure if that would be enough to kill him.

Even though the Duke of Extermination was pummeling him with Extermination Thunder, his regeneration was faster.

'Even if the others want to help.'

It was difficult to lend assistance.

Infernal Blaze and Extermination Thunder were recklessly spreading in all directions.

Han Seojin reached out his hand.

Limitless Soul.

It stretched out its achromatic arm behind Han Seojin.

"What is that?"

"…I don't think we can help much."

"Did you think of intervening there?"

"If I can, that is."

Ultimate Art, Divine Thunderbolt.

If I used that, I might be able to inflict some damage.

But there was a risk of the Duke of Extermination getting caught up in it.

Since her power absorbed lightning.

'Should I let her handle it alone?'

I'd rather not, but if I have to…

'Please, just drain as much of her strength as possible.'

Han Seojin had no confidence in enduring against the Duke of Extermination in that rampaging state.

He broke into a cold sweat, cheering for the Demon King.