Swordmaster’s Youngest Son Novel 2026

## Chapter 876

On the maritime base of the True Demon World, a massive darkness emerged.

Not only Sakiel, but also the demonic forces of the True Demon World below had never experienced Murakan’s ultimate technique before.

What kind of power it had, what events would unfold, no one could guess, but they instinctively felt that they were exposed to tremendous danger.

‘Activate the protective shield… We have to activate the protective shield!’

Sakiel urgently shouted for the fortress’ protective shield to be deployed, but her voice only echoed emptily within her mouth.

Her voice wasn’t truly ignored, but most of the demons who needed to act according to her order were already lost in the darkness.

They couldn’t even perceive the moment they were dying. Their vision momentarily darkened, and the second of consciousness that reflexively attempted to react to something was cut off.

The countless defensive mechanisms and protective spells that the True Demon World prided itself on were uselessly buried within the darkness. Sakiel frantically moved her body from side to side, trying to evade the darkness that was approaching from all sides and from behind.

‘The moment it touches me, it’s over…!’

Sakiel raised her crystal ball.

It was an attempt to use the Great Seal that had suppressed many Demon Kings, except Zito, in the past.

“I’ll make you regret not gracefully retreating!”

As Sakiel emitted her demonic energy, the darkness around her momentarily receded.

[Hooh, so you’re the highest-ranking demon, huh? Seems like you have a solid foundation.]

Murakan smiled sarcastically and looked at Sakiel.

However, he didn’t exert any additional pressure on Sakiel or release any breath to further restrict her. The purpose of Jin and Murakan’s visit to this place today wasn’t to completely demolish the True Demon World’s largest base.

Their objective was to determine its strength and evaluate how threatening its abilities were. For example, they needed to verify the numerous hidden aces that the demonic forces possessed.

Kwaaaah…!

The demonic energy surrounding Sakiel fiercely rotated, pushing back the darkness of the True Shadow Manifestation even further. Its speed steadily increased, and Murakan showed interest each time it did.

[Do you feel it too, boy? A tremendous power is being generated inside that shield where the demon is hiding. It seems like they’re attempting some kind of magic spell using the crystal ball.]

“It all depends on your judgment, Murakan. If it seems even slightly dangerous, attack without hesitation. Otherwise, let’s keep observing.”

[As long as my ultimate technique has been executed so perfectly, it’s impossible to think that it’s not dangerous. Of course, things could change if there’s a monster that can easily disperse the darkness of the True Shadow Manifestation. Like Elona Zipple, for example. In the True Demon World, maybe Zito and Paellito Belgasyum.]

According to Murakan, Sakiel’s effort to repel the darkness seemed like it was barely holding its breath against the darkness of the True Shadow Manifestation.

If Sakiel possessed the power of the Genesis Knight, she would have already attacked Murakan before the darkness of the True Shadow Manifestation fully deployed.

The silent slaughter continued in the base.

Murakan used his extended senses to feel the spreading of the True Shadow Manifestation darkness throughout the area, and Jin confirmed that the energy of the demons was rapidly extinguishing, one by one, beyond the darkness.

And now Sakiel had secured an area approximately five times larger than before. On the surface of the expanded demonic energy shield were numerous runes of a type that Jin had never seen before.

“Damn, or maybe seal-type magic. But since she confirmed my immunity to curses, it’s likely a seal magic spell.”

[No matter what she does, it won’t succeed.]

With Murakan’s confident words, Jin nodded.

At that moment, Sakiel’s Great Seal spell was complete. Sakiel opened her eyes wide, concentrating all her demonic energy and mana into the crystal ball.

‘The End of Hell, a magic spell that sealed seven Demon Kings until now. No matter how strong you are, you won’t be able to resist this…!’

The End of Hell, a magic spell that turned Sakiel, who was relatively weaker in combat compared to high-level commanders, into a chief strategist.

Although she never expected to reveal this magic at the same time as the war began, Sakiel felt relieved. If Murakan could repeatedly use his True Shadow Manifestation without any cost, it was right for her to do whatever it took to end this here and now.

“Let me send you to hell!”

Sakiel shouted as she gripped the crystal ball. According to her plan, the crystal ball should have released all the souls of hell that she had collected until now, which would then engulf Jin and Murakan. They would be restrained and plunged into an abyss that even the ancient Demon Kings couldn’t comprehend.

However, moments later, Sakiel realized that the runes engraved on the crystal ball weren’t activating.

‘What is this? The casting was flawless, without a hint of error. Then why isn’t it working?’

[Hahaha!]

At that instant, Murakan burst into laughter that he had been holding back. The darkness of the True Shadow Manifestation swayed along with his laughter, seemingly mocking Sakiel.

[While you were preparing the magic, my shadow force had already infiltrated the crystal ball. Although you didn’t have any room to spare, so it seems you didn’t know and desperately tried to complete the spell.]

“Indeed, it was a seal-type magic spell. If you hadn’t blocked it beforehand, it would have been a dangerous magic for sure. Given the scale of this level of power, even you or I would have had a hard time repelling it.”

[I hate to admit it, but it’s true. If the casting had been executed flawlessly, both of us would have had to give it our all to barely save ourselves from that situation.]

Only belatedly did Sakiel see the crystal ball, which had turned black.

“Ah…”

Such a rookie mistake that she couldn’t believe it herself. Ever since she had learned magic, Sakiel had never made such a mistake before.

The reason Sakiel hadn’t noticed the infiltration of the shadow force was no less than the words Murakan uttered.

It was because she had no room to spare. To resolve this situation through ‘her own strength’, there was only one option: The End of Hell. So she had desperately tried to complete the spell.

To deploy the spell and repel the advancing darkness, she couldn’t afford to pay attention to anything else. Not even to confirm the current state of the crystal ball that was right in front of her.

“Kahak!”

The darkness of the True Shadow Manifestation enveloped Sakiel’s right hand, which was holding the crystal ball. The darkness shattered both the crystal ball and her right hand, continuing its attack toward Sakiel.

[If I do it right, I could finish her off before the darkness of the True Shadow Manifestation ends, boy.]

“Never let your guard down until the end. But I’m intrigued by the idea of finishing off the True Demon World’s Commander here. Maybe I should unsheathe my sword soon.”

As Bradamante emerged from its scabbard, Jin wrapped it with shadow force. Sakiel barely managed to fly to avoid the True Shadow Manifestation.

Now that Jin had entered the battle, Sakiel’s death was imminent.

However, there was one last option left for Sakiel.

‘In the end… Do I have to use Lord Zito’s true energy?’

The problem was that it was Zito’s true energy, not her own.

Sakiel didn’t hesitate for long. It was already permitted to extract Zito’s true energy in preparation for this situation. Only a few of the highest-ranking demons, including Paellito and Sakiel, had this privilege.

From within her palm, Sakiel retrieved a small black mass that was only the size of a finger.

Zito’s flesh. An object that she intended to use when facing a Genesis Knight during the invasion of the human world. Even at that time, she had hoped to not use it if possible.

Consuming Zito’s flesh meant permanently weakening him. Even if it was just a piece of flesh, its value was different when it was fully returned to Zito and when it was used by other demons.

‘I’m sorry, Lord Zito.’

Sakiel squeezed the flesh in her hand, causing it to break like a nut. At that instant, Jin stopped swinging his sword and gathered energy.

He realized that the situation had suddenly changed, so he focused on defense.

“Murakan, she’s pulled out a new move. And this… is Zito’s energy.”

[Correct, it’s the power of the guy who was defeated by Ayula.]

The shadow force enveloping Sakiel began to dissipate.

Sakiel was dealing with a power that was on par with Zito, who had faced Ayula. Her torn arm had already regenerated, and in place of the vanished crystal ball, a new sphere of demonic energy was forming.

Within that sphere, the sealing magic that Sakiel had just attempted to cast was forming again. At the same time, offensive dark magic was falling like rain. It was a power that even Jin and Murakan couldn’t ignore.

Jin deflected the beams with his sword, and Murakan amplified the darkness of the True Shadow Manifestation, spreading his wings.

“Murakan, let’s retreat now.”

[Retreat? Sure, she’s become incredibly powerful by resorting to Zito’s strength, but her condition doesn’t seem good. It seems like she’s gone crazy. She probably can’t maintain this state for long.]

“That’s why we should retreat. As you said, I don’t think we can handle the Great Seal magic spell combined with Zito’s power, Sakiel’s boost won’t last forever. By retreating now, we can aim to attack again when Zito’s power diminishes.”

[Even I went too far by releasing the True Shadow Manifestation at its peak. If we want to fight at the same level as now when we return after retreating, I’ll need a recovery period, alright?]

“I don’t mind. Even if we retreat, we’ve already gained an advantage. The power of Zito used by Sakiel will undoubtedly be lost. If it were a type of power that didn’t disappear, there would be no reason to bring it out now. As a price for this battle, it might be enough for you to recover a bit, but they won’t be able to recover what they used today.”

[Alright, understood. In that case, I’ll disperse the remnants of the True Shadow Manifestation toward the fortress before we retreat.]

Suddenly, Murakan smiled maliciously and concentrated the True Shadow Manifestation toward the fortress. Sakiel was about to pursue Jin and Murakan, but she stopped when she saw the fortress being destroyed.

Zito’s flesh, treasured by the True Demon World’s leaders as if it were their own lives, had been used and vanished, protecting the fortress.

Chapter 876

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