Eichi's External Technique, the Holy Grail, originated from the Type-Moon world.
According to legend, the Holy Grail is an omnipotent wish-granting device capable of fulfilling any desire.
However, like most legends, the Holy Grail is not truly omnipotent.
In fact, not long after rumors of the Holy Grail in Fuyuki City began circulating, the Holy Church investigated it.
Eventually, the Holy Church concluded that it was a fake.
In other words, this Holy Grail is a counterfeit. Don't be deceived.
So why is it still called an omnipotent wish-granting device?
Because for most people, the Holy Grail really can grant wishes.
However, the method of granting those wishes depends on what you can provide.
The Holy Grail's method of fulfilling wishes is based on the Third Law, Soul Materialization.
Its essence lies in containing the Third Law and possessing an immense reserve of Cursed Energy.
Just like how Amakusa Shirou Tokisada wished to save all of humanity through the Third Law, the Holy Grail responded to his wish.
Anima Animusphere, founder of Chaldea, successfully wished for a massive amount of money.
But Emiya Kiritsugu failed, because the wish he made to the Holy Grail, "world peace, no more conflict among humans," was something even he didn't know how to achieve.
So even if the Holy Grail hadn't been corrupted, Kiritsugu's wish would still have gone unfulfilled.
But for most people, the Holy Grail remains an omnipotent wish-granting device.
I want to use the Third Law to materialize a large sum of money, then summon a wife.
Is there a problem with that?
There's no problem.
Furthermore, if you encounter a problem you can't solve, you can also ask the Holy Grail to summon a Servant to help you.
It's just that summoning a Servant consumes a massive amount of Cursed Energy. You might need to store Cursed Energy for a long time, like in the Type-Moon stories, to summon one even once.
However, Eichi didn't have that many plans in mind right now.
This time, the wish Eichi intended to make to the Holy Grail was very simple.
With the help of the Third Law, explore his Soul and body, and understand the true nature of the Ten Shadows Technique.
Where exactly does Jujutsu exist?
Initially, Eichi believed it resided in the brain. But putting Kenjaku aside, where did Sukuna get a brain from, relying only on fingers?
And then there were people like Yoshino Junpei, who had Cursed Energy and Jujutsu but were unable to use Jujutsu due to the structure of their brain.
Additionally, Sukuna once said to Itadori in the Juvenile Detention Center:
"Even if I die in your body, there are still eighteen of my Soul Fragments out there..."
From this, Eichi speculated that the origin of Jujutsu might be linked to the Soul.
Sukuna's fingers are merely vessels that carry his Soul and Cursed Energy.
And the word "Soul" in the Third Law's "Soul Materialization" suggests a deep understanding of the Soul.
If one doesn't understand the Soul, how can one materialize it?
Therefore, Eichi decided to make a wish to the Holy Grail, asking it to help him explore his Soul.
"Are you ready, Eichi?"
It was Medea who spoke.
She was responsible for preparing and safeguarding this wish.
"Let's begin, Medea."
A golden cup appeared in Eichi's hand.
Since it was an External Technique, the Holy Grail could be brought out of the body.
The golden cup was placed at the center of Medea's magic circle.
This was a magic circle that Medea had meticulously prepared to monitor the Holy Grail's operation and Eichi's condition.
If something went wrong with either the Holy Grail or Eichi, Medea would intervene immediately.
Eichi lay down on the ground, slowly falling into a deep sleep, his consciousness becoming increasingly hazy.
Gradually, Eichi felt a sticky sensation surrounding him.
It felt as if he were sinking into a swamp.
Eichi sensed immense resistance as he moved his arm, his heart full of doubt.
Soon, Eichi saw clearly what was around him.
He seemed to be in a dark ocean, with every movement facing the same resistance as seawater.
The only light source in the entire world was a humanoid figure far above.
'Is that my body?'
Eichi laboriously raised his hand.
Sure enough, his arm in his field of vision looked illusory and transparent.
After sinking for an unknown amount of time, Eichi noticed a peculiar light coming from below.
It resembled the positive energy light from Mahoraga's Sword of Exorcism.
Eichi turned his gaze and saw a peculiar magic circle before him.
Mahoraga stood at the center of the magic circle.
Like a tall stone statue.
Beneath Mahoraga's feet was a massive Eight-Handed Sword pattern.
With Mahoraga as the center, the magic circle extended outward with nine lines.
At the end of each line stood a Shikigami.
Only one of the Shikigami had already dissipated.
Only the pattern was already blurry.
Eichi reached out and touched the blurry pattern.
Then he carefully observed the Ten Shadows Technique's magic circle.
Under the Holy Grail's blessing, Eichi's Soul Power grew stronger, and his perception became increasingly sharp.
Soon, a mysterious sensation emerged from the magic circle.
It seemed to be connected to something deeper.
Eichi spread his arms and lay down at Mahoraga's feet, the very center of the Ten Shadows Technique's magic circle.
The Holy Grail's power continuously blessed Eichi's Soul. Gradually, he felt himself sinking into another world.
The light above disappeared.
That signified Eichi's Soul had left his body.
In reality, Medea noticed Eichi's Soul drifting further and further away and immediately prepared to retrieve it at any moment.
Eichi felt as though he had fallen asleep.
When he awoke, it was as if he had transmigrated once again.
Eichi opened his eyes and looked around.
A kaleidoscope of black.
That was Eichi's first impression.
Eichi's Soul floated in this bizarre world.
Like a reflection on water, everything here was reversed from reality.
Even the light was black.
Eichi's Soul observed this mystical realm.
Soul vision differed from physical sight, and the Shadow World differed from the real world.
All of it made Eichi feel curious and fascinated.
Soon, Eichi found the thing in this world that resonated with his Soul.
It was a massive magic circle, the origin of the Ten Shadows Technique.
This magic circle imprints itself in the Soul of every Ten Shadows Technique user, allowing them to use the power of Shadow Shikigami.
As he approached the magic circle, pairs of eyes lit up in the Shadow World.
All of them were staring at Eichi, the foreign presence.
'Shadow beings?'
Among them, Eichi saw creatures resembling Divine Dogs and giant snakes.
Eichi remained vigilant as his Soul floated toward the magic circle.
The Ten Shadows Technique's magic circle responded to Eichi as well.
The shadow creatures backed off, and Eichi placed his hand on the magic circle.
Shadow Cursed Energy flowed from the magic circle into Eichi's Soul.
Eichi's Soul felt a slight tingling sensation.
To his surprise, the projection of the Ten Shadows Technique's magic circle within his Soul had been repaired.
Shiro, who had been sunbathing in the yard, suddenly perked up his ears as if sensing something.
Because his strength was falling behind, Shiro had become Tokyo Jujutsu High's mascot, now guarding the school gate.
The next moment, Shiro transformed into a ray of light and flew into Eichi's Soul, leaving behind a single golden chess piece.
Gurgle, gurgle.
"The shadow is moving?"
Medea looked at the shadow beneath Eichi.
Muffled sounds continued to echo from within the shadow.
"This is bad."
Medea immediately deployed a barrier, protecting everything in the room.
Boom.
Eichi's shadow surged like a flood, swallowing the entire barrier.
(To be continued.)
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◇ One bonus chapter will be released for every 200 Power Stones.
◇ You can read the ahead chapter on Pat if you're interested: p-atreon.c-om/Blownleaves (Just remove the hyphen to access normally.)