The Successor to the Underworld Is a Cheat Player

Torture.

These lunatics tortured Sein and Roberta in every imaginable way.

Using all sorts of rare items found in the sanctuary.

“Screaaaam!”

It felt like they were dissecting Sein bit by bit.

Mind, body, and magic.

They relentlessly tortured, studying only methods to inflict pain.

“Freezing segments of the body causes agony.”

The black figures torturing Sein meticulously recorded everything about him.

“Stop it! Please!”

Sein’s howls were in vain.

“Haa… Haa….”

Even collapsing from exhaustion held no significance.

On a certain day, a finger was severed.

And a potion was administered.

“Seems to recover quickly.”

All of that was akin to experiments cloaked in torture.

Hope.

“…Demorus… will… find… you.”

Having been kidnapped on the way to Demorus, they believed that help would come to rescue them.

Even Sein’s threats.

Useless!

Nothing worked.

More serious than Sein was Roberta.

“Her mental strength is extraordinary.”

Roberta, despite enduring excruciating torture, did not lose her venom.

Luckily, Cecile was excluded.

Being a young woman meant nothing to them; what mattered was not to touch Cecile, for they knew who she was.

“You… bastards….”

“Is there still some sanity left?”

Resistance, screams, threats—all were futile.

How many days had passed?

“…Say what you want.”

Finally, Sein broke.

It was nothing but the expected outcome from the start.

Sein had enjoyed countless lives during his immortality.

“Say… what you want.”

There was no torture there.

In reality…

Reality was no longer important.

Now, this place was his reality.

“Your eyes still show some life in them.”

The apparition of darkness appeared disappointed.

“Increase the intensity.”

“You bastards! Kill! Kill him! Rather die! Aaaahhh!”

Torture resumed.

It was when Sein’s eyes, once filled with firearms, clouded over.

“It took a long time. No one has endured even a week in this place.”

One day, Roberta and Cecile disappeared.

But Sein no longer had any hope of them ever crossing his mind.

He simply focused on the pain he felt within himself.

He exerted all his strength to somehow escape this place.

“Nearly a month.”

A month.

It was the period during which Sain endured brutal torture.

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“It’s record-breaking.”

It could be considered a remarkable achievement even for a creature of darkness.

“Yes. Sain Demorus, are you ready to talk?”

Sain’s hazy gaze turned to the creature of darkness.

“Who are we?”

The question he asked on the very first day he arrived here.

“…Nation.”

Sain slowly swallowed his dry saliva.

“…Empire.”

The lips of the creature of darkness.

Ssiiick!

It twisted and crept up to form words.

“Yes, we are an empire!”

The creature of darkness shouted with a voice filled with madness.

“What are you!”

“Sain… Demorus.”

“Yes. You are Sain Demorus.”

The face of the creature of darkness loomed like a monster.

“Will you become a spy for our empire?”

That was the original purpose of the creatures of darkness.

They tortured Sain to break his spirit for that purpose.

And finally.

“…I…”

Sain spoke.

“Would you do that if it were you, you bastards?”

There was a glint of determination in Sain’s previously hazy eyes.

“Would you? You bastards?”

A voice that seemed to release pent-up anger.

“…!”

The creature of darkness recoiled in surprise at Sain’s sudden vigor.

“How…?”

In that moment.

Clang!

The iron chains that bound Sein began to break apart.

Throughout thousands of lives, torture was absent.

However.

“Perhaps I should have prepared for this.”

At the moment when the final life became reality, Sein, who had assumed all the worst-case scenarios, was there.

All that was given was threat and time.

Within that, Sein did everything possible, preparing for the impending future.

Clang!

But the conclusion reached then was that pain does not become familiar.

Hence, the lesson learned was.

-There are times when one must endure unbearable pain in crisis situations.

This was also a teaching acquired in past lives.

Skill, building a tolerance for pain.

Moreover, it was virtually impossible for Sein to entwine the Dragon Heart he possessed with Baldur’s iron chains.

“You’ve all been wasting your time.”

All the time filled with pain turned to smoke.

The information about Sein recorded by the beings of darkness was also nothing but smoke.

“Why have you endured until now?”

Suddenly, a being of darkness stood upright and spoke.

A change in atmosphere.

“If you were to say you wanted to know your purpose… that would be a lie.”

Sein clenched and unclenched their fist.

Within it, a single sword emerged.

“I was curious about how far I could go myself.”

Sein.

Thrust!

Without hesitation, Sein plunged the sword into the being of darkness.

Manipulating numerous items at will, the being of darkness, who had even shown the authority of an absolute being, appeared lacking in their final moments.

“Excellent.”

The being of darkness pierced by Sein’s sword spoke from within Sein’s embrace.

“The world of the psyche is not a place one easily arrives at.”

Accompanied by Sein’s unknown voice.

Crackle!

Fissures began to appear in the world.

From the beginning, this place was not reality.

An artificially created world of the psyche.

In a sense.

“A virtual reality within a virtual reality.”

Virtual reality.

The realization came when exchanging glances with Sessil.

Though bound to Sessil as the Saint, the connection seemed too vague.

And…

Thump thump.

It was a heart that hadn’t raced before.

More precisely, it was the lack of sensation of the contract with the dragon within the Dragon Heart.

Rustle!

The cracks in the world were growing fiercer.

“This is truly insane.”

Rumble!

The shattered world finally awakened.

Sein slowly opened his eyes in the returning darkness.

There were around a dozen figures in black, one knee bent, waiting.

“Congratulations on passing.”

Rare items in the world.

A brooch of gold.

It was known as a symbol of the remnants yearning for the old empire.

If they truly were remnants of the old empire, Sein couldn’t have missed recognizing them.

“Sein Demorus, heir candidate.”

In front.

The figure who tormented Sein in his mental world was there.

Sein surveyed the surroundings.

Step by step, he advanced without hesitation.

His body, well taken care of, was in top condition, clothes changed, but the longsword at his waist and the bastion on his back remained.

Sein chose the longsword at his waist.

And.

“Excellent…”

Swish!

“As you wish…”

With his throat hitting the ground, he uttered his final words.

“Feels disgusting.”

Even if it was a mental world, the pain he had to feel was a clear fact.

He had to endure that dreadful feeling.

Whooosh!

He had to let it out here.

After all, that must have been the purpose of their waiting here.

“This is a truly insane place.”

Demorus, one of the three Dark Lords ruling the continent.

All of this was their trial.

Walking a bit further, the view of Demorus revealed itself through a broken wall.

It was more akin to the appearance of a ‘castle’ than a single ‘family’.

“This is insane.”

That was the first impression Sein had of Demorus.

*

*

*

Sein opened his eyes in Demorus.

He had arrived at his family home while being lost in the imaginary world.

Was this recent event not dangerous? It was not.

‘It must be a kind of blessing.’

Being lost in the imaginary world meant he had lost consciousness for even a moment.

If someone had genuinely tried to kill him when he was defenseless, it would have been truly dangerous.

‘I might have endured it, but I definitely need to prepare for this.’

There were things coming to mind.

About how to strengthen what he had already prepared.

“Ha.”

And Sein let out a bitter laugh.

“What a messed up place.”

Finally, Demorus that he had entered.

“To think I have to deal with this mess right away.”

A place where not even an inch of comfort could be expected, only filled with anxiety.

The fact that this place, full of edge-like tension, was supposed to be home was truly dreadful.

Then someone approached Sein.

“How’s your body feeling?”

Roberta.

They had only been trapped in the imaginary world for barely three days.

“You still look like you’re about to die.”

Roberta seemed to have lost over ten kilograms in that brief moment.

“…Not yet.”

She couldn’t even speak properly.

“Then, how about resting a bit?”

It wasn’t so much out of consideration but more out of genuine fear that she might die.

“Security… mission…”

“It’s going to be chaotic for a while. Do as you please.”

So, the two strolled slowly within the castle.

The problem was entering Demorus, but the activities inside were relatively free.

And another interesting thing was that there seemed to be no sign of people inside the castle’s vast walls.

If you were to ask if they were the only ones in this spacious castle.

“How long do we have to stay here?”

That wasn’t it either.

A question directed at the empty air.

Thud.

A shadow that appeared from somewhere knelt down and spoke.

“The Lord must have a summons for you.”

Hidden in unseen places are the minions of Demorus.

“Disappear.”

At Sein’s command, the shadow vanished like smoke.

“Hmph.”

Sein breathed in the air and spoke out.

“I guess I have to acknowledge it.”

No matter how bizarre this place was.

Shooosh-!

“To think such a place still exists.”

As supreme as everything visible and everything breathing.

The tale was heard.