Chapter 5 — The Final Guard Unit
"Technique Activation"—it was the most fundamental ability a Jujutsu Sorcerer could possess.
The moment you managed to activate your cursed technique, you were officially considered to have stepped into the world of Jujutsu Sorcery.
From that point onward, your only job was to hone your technique, refine your control, and work your way toward receiving an official rank as a Jujutsu Sorcerer.
In the world of Jujutsu, power wasn't measured by how much Cursed Energy you had. The only thing that mattered was one question:
What grade of Curse can you exorcise on your own?
If you could take down a Grade 4 Curse by yourself, you were a Grade 4 Sorcerer. If you could solo a Special Grade Curse, then you'd be considered among the strongest Grade 1 Sorcerers alive.
Of course, reaching the rank of Special Grade was an entirely different matter.
In this current era, Special Grades were seen as individuals capable of bringing down entire nations. That was the unofficial definition.
To receive an official rank, one needed evaluation from the top authorities of the Jujutsu world—namely, the Tokyo and Kyoto Jujutsu Technical Colleges, or the Three Great Families: Gojo, Zenin, and Kamo. Only they had the authority to assign official titles.
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When you channel Cursed Energy into your own technique—that was Technique Activation.
This ability could be refined through innate talent and relentless training, which deepened your understanding and improved the precision of your technique.
Take Gojo Satoru, for example. His body naturally inherited the Limitless technique. When that technique was reversed using Reverse Cursed Technique, it became "Blue"—a force that generated powerful gravitational pull.
Its counterpart, "Red," and other more advanced applications, were far more complex... topics for another time.
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Because her Cursed Energy was so weak—and she was still young—Mai Zenin, Kyūjō's older sister, had never once successfully activated a technique of her own.
Which was why she was so stunned when she saw Kyūjō do it so easily.
Until now, she had always assumed her little brother was just like her—untalented, fragile, flawed.
But now, she realized the harsh truth.
The one who lacked talent... was her.
To awaken his own personal technique at the age of eleven?
That wasn't just talent—it was genius. Even by Zenin standards, it was rare.
— — —
A flash of white light swept across the room.
Kyūjō released his technique. The long sword that had manifested in his hand faded away like mist.
Without saying a word, he picked up a pen and scribbled a message on paper:
"My technique boosts my entire physical body. That sword acts like a cursed tool—it deals enhanced damage to Cursed Spirits."
"The spirits faced by the Final Guard are all low-grade. They're not particularly dangerous. I want to join them so I can practice my swordsmanship. Please don't stop me."
Reading Kyūjō's note and seeing the calm in his eyes, Zenin Arisa felt something unfamiliar stirring in her chest.
Was this really her son?
In the Zenin Clan, there was an unspoken law:
"If you're not a sorcerer, you're not even human."
As a mother who had spent her whole life under that brutal truth, Arisa knew she had no moral right to stand in the way of a child who had finally crossed that threshold—no matter how young he was.
"Kyūjō… even if you've awakened your technique, please… be careful in the Final Guard. I don't want you to get hurt," Arisa said softly, her eyes glistening.
"Then I'll go too!" Mai suddenly shouted, spinning around. "I want to join the Final Guard with Maki-nee and Kyūjō!"
But Maki stepped forward and cut her off with a firm glare. "You? Mai, how about you train your own technique first before joining anything?"
As the oldest sister—with both the physical strength and emotional maturity to back it—Maki easily calmed her impulsive younger sibling.
— — —
That night, Zenin Ogi—their absent father and the "head" of their small household—returned home.
Arisa, filled with rare excitement, immediately told him the news about Kyūjō.
"Oh yeah? Seriously?" Ogi raised an eyebrow, surprised.
He sat down cross-legged on the tatami floor and said coldly, "Call the boy here."
Once Arisa left to get him, Ogi narrowed his eyes and muttered to himself:
A technique in the shape of a sword… boosts the body… and deals more damage to Cursed Spirits? Hmph. Sounds decent, if it's not just some bluff.
In his heart, Ogi Zenin had never truly acknowledged Kyūjō.
To him, the boy was just a mute failure. Trash.
— — —
Meanwhile, Kyūjō, who had just been summoned from his room, narrowed his eyes as he walked toward his father.
Still sees me as garbage, huh? Fine.
Let's play this your way.
— — —
Moments later, Kyūjō stood before his father and attempted to replicate the technique he had used earlier.
But this time, he acted clumsy, flinching slightly, and failed to activate it properly.
Ogi's face darkened instantly.
With a displeased wave of his hand, he dismissed Kyūjō like a fly, glaring at Arisa before storming back into his room.
He fully believed the boy had lied about his ability.
If he wasn't so tired tonight, he thought, he'd have given that brat a beating.
"Completely worthless," he muttered under his breath.
— — —
Of course, Kyūjō had faked the failure.
He had absolutely zero interest in being acknowledged by someone like Ogi Zenin.
A man who blamed his own children for his failure to become clan head?
No thanks.
— — —
A few days later, Kyūjō and Maki officially joined the Final Guard Unit.
From that day forward, Kyūjō slowly began revealing his extraordinary talent to the world:
A body far stronger than any ordinary human.
Swordsmanship that grew at an unnatural pace.
With this combination, Kyūjō earned his place in the squad in just a few short months.
Before long, he was already accompanying them on real missions—exorcising low-grade spirits outside the Zenin estate.
Meanwhile, Maki trained day and night:
Learning to wield cursed tools, knives, spears, bows—even guns.
Thanks to her Heavenly Restriction-enhanced body, her physical growth was rapid.
Only six months after Kyūjō, thirteen-year-old Maki caught up to the senior members of the Final Guard.
— — —
"Don't worry, Maki-nee. I'll protect you."
That was what Kyūjō wrote on the small note he handed to her one day.
Maki tapped his head with a sigh, a faint warmth rising in her chest despite herself.
"Kyūjō, I don't need you to protect me. Just make sure you stay safe."
Even though she knew full well her little brother had already surpassed her in strength, Maki still said it firmly—like a proper big sister should.
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