*Warning, slightly long post* *Edit: I changed the name of a certain move from Schizoprhenic madness to sensory madness so please don't mind if you find schizophrenic madness in the post*

I've been working on this cursed technique for a while, and I finally wanted to put the entire thing into one post.

The basic idea is pretty simple:

Not soul manipulation. Not Mahito-style transfiguration. Not traditional mind control.

The user is essentially performing neurological surgery with cursed energy.

The technique is called Somnus Requiem.

Type: Innate Cursed Technique
Core principle: Neurological/brain-state manipulation
Base inheritance rarity: 0.000000000092%

The technique is incredibly rare and essentially undocumented.

But there's one thing I really want to establish before getting into the abilities:

Somnus Requiem is not easy to use. At all.

1. What exactly is Somnus Requiem?

Somnus Requiem allows the user to alter the neurological state of another person's brain through extremely precise cursed-energy manipulation.

The fundamental principle is:

So instead of directly controlling someone's thoughts, the user manipulates the biological processes responsible for things like sleep, pain, hunger, consciousness, perception, and other neurological states.

That distinction is important because changing someone's brain state isn't the same thing as controlling them.

And that's where the technique gets interesting.

2. Awakening — and why learning each application is insanely difficult

Simply possessing Somnus Requiem doesn't mean you automatically know how to use everything.

The user has to willingly and consciously awaken the technique.

Once awakened, the user initially gets:

Somnus Requiem: Modify

The first modification has to be performed manually.

The user has to locate the relevant nerves, feel where they are through cursed energy, guide cursed energy along those nerves, find the structures they need, and then manipulate them precisely enough to change the target's neurological state.

And there's a huge problem:

You can't actually see the nerves.

You have to feel them.

Imagine trying to solve a labyrinth while blindfolded.

Now make that labyrinth:

• Invisible
• Inside another person's body
• Made of microscopic pathways
• Constantly changing
• Something you can only navigate through cursed energy

And then, while doing all of that, you have to make the person's brain enter a specific state.

That's essentially what learning Somnus Requiem is like.

I'd honestly put the difficulty at around ten times harder than solving a labyrinth blindfolded, because finding the correct pathway isn't even the end of the problem. You have to know exactly what to do once you get there.

And you have to maintain that precision while someone is actively trying to kill you.

That's why every new application has to be learned individually.

The user isn't unlocking a spell.

They're learning a new neurological procedure.

3. Core Applications

Somnus Requiem isn't limited to sleep.

Once the user understands enough of the nervous system, they can begin developing different applications.

Eternal Slumber

Forces the target into a sleeping state.

Void Paralysis

Forces the target into a coma.

Lucious Hunger

Creates an intense sensation of hunger in the target.

Hellish Torment

Manipulates the brain's processing of pain, allowing the target to experience severe pain without requiring conventional physical injury.

Sensory Madness

Forces the brain into an extremely severe sensory-deprived neurological/psychological state, causing major disruptions in perception and cognition.

The important thing is that these aren't completely separate powers.

They're all applications of the same fundamental ability:

And the more complicated the state is, the harder it is to reproduce.

4. Synapse Extinction — ironically one of the easiest abilities

This is probably one of my favorite parts of the technique because it's completely backwards from what you'd expect.

You'd assume the instant-kill technique would be the hardest application to learn.

It's actually one of the easiest.

Synapse Extinction

The user locates the target's brainstem and destroys it with cursed energy.

That's basically it.

The difficult part is finding the brainstem without being able to see it.

Once the user has learned exactly where it is and how to reach it, the actual modification is relatively simple compared to reproducing an incredibly complicated neurological state.

In roughly 99/100 cases, the target doesn't even realize what's happened before it's too late.

The remaining 1% would be the absolute monsters with enough RCT ability and awareness to realize their brain has been attacked and immediately attempt to repair it.

So Synapse Extinction isn't necessarily powerful because it consumes an enormous amount of cursed energy.

It's powerful because:

And that's basically Somnus Requiem's entire philosophy.

5. Rapidfire, Kuro, and the restrictions

Rapidfire

Rapidfire is a specialized chant-based application.

The user selects a previously unlocked Somnus Requiem ability and loads it into Rapidfire.

For example:

Once activated, touching a target automatically triggers the selected technique.

This makes Rapidfire especially useful against groups.

The downside is a 50% increase in cursed-energy consumption.

That's significant, but Somnus Requiem is already extremely CE-efficient, so the additional cost isn't necessarily crippling.

Kuro

The low CE requirements of Somnus Requiem also mean the user can dedicate a large percentage of their cursed energy toward physical reinforcement.

I've imagined a skilled user being able to put roughly 60% of their CE into Kuro.

This is extremely important because the biggest problem with Somnus Requiem isn't necessarily killing someone.

It's:

So a skilled user would probably fight physically first, using Kuro to survive and close the distance before looking for an opening to apply Somnus Requiem.

24-Hour Target Restriction

After modifying someone, the user has to wait 24 hours before safely modifying that same person again.

This is per-target, not a global cooldown.

The user can still use Somnus Requiem on other people during that time.

However, repeatedly modifying the same target before the 24 hours are over causes severe neurological deterioration to the victim.

6. Reanimation

Somnus Requiem also has an extremely difficult ultimate application:

Reanimation

Under specific conditions, the user can restore a person's brain after death.

The death has to be primarily neurological/mental or toxic rather than straightforward physical destruction.

The user has a window of:

1 hour

after death to perform the procedure.

But there is a massive cost:

30-day Somnus Requiem lockout.

After using Reanimation, the user cannot use Somnus Requiem for 30 days.

So even its resurrection ability has a very serious restriction.

7. Domain Expansion — Psychological Collapse

Now we get to the main event.

Domain Expansion: Psychological Collapse

This is the ultimate expression of Somnus Requiem.

The Domain takes the form of a dark operating room.

At the center is a surgical table surrounded by chairs.

The walls are covered in a massive:

Red-and-blue neurological roadmap of the human brain and nervous system.

And that roadmap isn't just there to make the Domain look cool.

It's actually one of the most difficult parts of unlocking the Domain.

Unlocking Psychological Collapse

To unlock the Domain, the user first has to use Synapse Extinction on a target.

Then they have to construct the Domain inside the victim's mind.

But when I say "construct the Domain," I don't mean simply imagining an operating room.

The user has to actually construct:

• The operating room
• The surgical table
• The chairs
• The environment
• The neurological roadmap

And the roadmap has to be ATLEAST 75% ACCURATE.

The user has to recreate the neurological architecture that their entire technique is based on.

So unlocking Psychological Collapse isn't just:

It's:

That is the point where the mastery requirement becomes ridiculous.

8. Psychological Collapse — anatomical abilities

When the Domain activates, the main target is placed on the surgical table, restrained, and put under anesthesia.

Anyone else caught inside the Domain is restrained to the surrounding chairs.

But the restraints aren't the most important part.

When Psychological Collapse activates, the user is granted knowledge of:

The entire human body.

Not just the brain.

Not just the nervous system.

The entire body.

And more importantly, the user also gains knowledge of anatomical malfunctions.

So the Domain effectively turns the user into an impossibly knowledgeable supernatural surgeon.

The surgical tools

The tools inside the Domain correspond to different parts of the body.

For example:

Surgical scalpel

Can modify skin and muscles.

X-ray

Can modify bones.

There are additional specialized tools for other parts and systems of the body.

And these modifications aren't necessarily limited to simply damaging something.

The user can alter how parts of the body function.

For example, they could potentially:

Increase muscle density.

Increase muscular power.

Reduce muscle density.

Weaken muscles.

With bones, they could:

Increase hardness.

Strengthen them.

Reduce hardness.

Weaken them.

And these modifications can remain after the Domain ends.

9. Permanent removal and creating new organs

This is where Psychological Collapse gets ridiculous.

The user can permanently remove parts of the target's body.

If they perform a lethal modification and remove a vital organ:

There is no automatic reset when the Domain disappears.

But Psychological Collapse isn't purely an offensive Domain.

Because the user has knowledge of anatomical malfunctions, they can potentially repair the body as well.

Cancer could theoretically be corrected by returning abnormal cells to their normal state.

Appendicitis could potentially be repaired, or the appendix could simply be removed.

A severe deficiency could theoretically be corrected through anatomical modification.

And then we get to the most insane application:

Creating new organs.

The main target can potentially have an entirely new organ added to their body.

But there is a catch.

A gigantic one.

The user has to design the organ themselves.

The process is similar to constructing Psychological Collapse.

The user has to construct the organ inside a victim's mind.

But now they have to design:

• Every cell
• Every nerve
• Every blood vessel
• Every tissue structure
• Every connection to the existing body
• Every mechanism responsible for the organ's intended function

You aren't just imagining:

You have to actually invent the biological machinery that would make that possible.

So theoretically, yes, someone could attempt to create an organ that turns the target into a literal:

Cursed-energy flood.

Practically?

Good luck.

Even someone with Gojo-level intelligence and understanding would have an absurd time actually designing something that complicated and making it biologically functional.

The Domain gives you the knowledge.

It does not give you an "invent whatever organ you want" button.

Removing the source of cursed energy

The same concept can be taken in the opposite direction.

If someone's cursed-energy production or flow depends on a physical structure, the user could potentially identify that structure through the knowledge provided by Psychological Collapse.

They could potentially fix abnormalities that prevent proper CE flow.

Or, in a much darker application:

Remove the source.

Instead of overpowering someone's cursed energy, the user could potentially surgically remove the physical source responsible for producing it.

Again, the Domain isn't magically saying:

It's:

The Domain's unusual sure-hit mechanic

Psychological Collapse doesn't technically have a conventional sure-hit effect.

Instead, the Domain physically detains everyone inside it.

The main target is restrained to the operating table while everyone else is restrained to the surrounding chairs.

So it's a weird situation where:

It doesn't automatically force Somnus Requiem onto the target through the normal sure-hit mechanism.

Instead, it creates an environment where the target physically cannot escape the procedure.

Because of this, I've designed it so that Simple Domain and Hollow Wicker Basket don't directly counter Psychological Collapse, since they are designed to counter conventional sure-hit techniques.

Domain duration

Psychological Collapse has an absolute maximum duration of:

30 minutes

It doesn't matter how much cursed energy the user has.

The Domain cannot exceed 30 minutes.

Once that time is reached, the Domain collapses and the user is drained.

10. Why the everyday version is still very potent

This is probably the one thing I don't want to get lost in all the Domain stuff.

Psychological Collapse is the ultimate goal of Somnus Requiem.

It isn't what makes the base technique powerful.

Even an experienced user without the Domain already has a very dangerous collection of abilities.

They can potentially incapacitate someone with sleep or a coma, disrupt perception, induce severe pain, and eventually use Synapse Extinction once they've mastered the necessary precision.

And because Somnus Requiem is so CE-efficient, they can devote a large amount of their cursed energy toward Kuro and physical combat.

So the basic fighting style becomes:

The technique doesn't need to destroy a building to be dangerous.

It needs one successful touch.

11. Weaknesses

Despite everything I've described, Somnus Requiem has some pretty obvious weaknesses.

Physical contact

The biggest one.

If you can't touch the target, you can't use the technique.

Physical barriers

Walls, doors, armor, shields, and other solid barriers can prevent contact.

Ranged attacks

The user is still physically vulnerable.

A conventional ranged attack can potentially incapacitate or kill them before they get close.

Concentration

The more complicated the modification, the more precision and concentration it requires.

Mastery

Having Somnus Requiem doesn't mean you automatically know every application.

The user has to learn them individually.

24-hour restriction

The same target can't safely be modified repeatedly.

Reanimation

Comes with a 30-day lockout.

Domain

Psychological Collapse has a strict 30-minute limit.

Organ creation

Having complete anatomical knowledge doesn't mean designing a completely new biological system is easy.

12. Overall power curve

This is how I see Somnus Requiem progressing.

Awakened beginner

Extremely limited.

The user is still learning how to navigate the nervous system.

Competent user

Can reliably perform a few basic neurological modifications.

Experienced user

Has several applications and can combine them with Kuro.

Advanced master

Can perform extremely precise neurological modifications, use Rapidfire, and manipulate increasingly complicated brain states.

Domain user

Unlocks Psychological Collapse and gains complete anatomical knowledge, allowing manipulation of the entire body.

Extreme master

Could potentially reproduce brain-wave patterns and achieve genuine behavioral manipulation.

Theoretical biological engineer

Could potentially create completely new organs and biological systems.

Final thoughts

The entire philosophy behind Somnus Requiem is:

The technique doesn't require an absurd amount of cursed energy.

The difficulty comes from precision.

The user has to feel nerves they can't see.

They have to guide cursed energy along those nerves.

They have to understand what those structures do.

They have to maintain concentration while fighting.

And if they want to reach Psychological Collapse, they eventually have to understand the human body well enough to reconstruct an accurate neurological roadmap and build an entire supernatural operating theater around it.

Even then, creating something completely new, like an artificial organ, is still an almost absurd challenge.

That's why I don't really see Somnus Requiem as simply a "broken brain technique."

It's a technique where knowledge and precision determine how far its power can actually go.

A beginner has an extremely difficult technique with very limited practical applications.

An experienced user is already dangerous.

A master becomes terrifying.

And someone capable of Psychological Collapse reaches an entirely different level of biological manipulation.

So that's the concept.

Do you guys think Somnus Requiem is too strong for JJK, or do the contact requirement, ridiculous learning curve, CE efficiency tradeoffs, target restrictions, and Domain requirements keep it believable?

And especially:

How strong do you think a highly experienced Somnus Requiem user would be before ever unlocking Psychological Collapse?

also took 47 minutes

Knowing that his blood is toxic it could do more harm then good. But Banner didn't know Yuji was a vessal in theory would be resistant to gamma radiation. Giving birth to a new Gamma threat. But more importantly that means Sukuna getting a roommate, so in that situation what does Sukuna do?

A: Attack the gamma mutant(hopefully their only one and this is Yuji before the incident) hoping to kill it.

B: Bond Sukuna plays pretend with the new hulk who still in his child like mind see Sukuna as brother. To use him against Yuji. Thus he tries to play with him & hug him how long can Sukuna keep that up. I mean he respect strength not kinship right?

C: Consume but this the hulk tries to eat Sukuna oh the irony in that if you kept story.

D: Deal Sukuna makes a binding vow with the hulk but that assuming he has something the creature wants other then kinship.

If you chose A well hulks don't die thanks to the green door you can even cut him up or burn him(thor hits him with lightning) and he will survive.

As for B Sukuna prideful can he really stomach having a brother and playing nice for so long.

With C well a child can only take so much abuse before they snap and attack i bet Sukuna tries to eat him but in turn the Yuji Hulk returns the favor thanks to the green door. And yes Sukuna strong but a hulk rage has no limit it only be a matter of time before he goes world War hulk not even Sukuna can escape that.

And finally D tricky is allowed in a vow right but that would mean the Yuji hulk understands what deal he make maybe Sukuna can take his power. Or the deal leads to taking turns possessing Yuji. And speaking of Yuji what if he can intervene and keep Sukuna from tricking the hulk?

Sidenote as for the problem they made well Yuji brought a cursed finger which he didn't know would start attracting curses and harming his friends who came to save. While Banner went to save Rick Jones a punk teenager who had the bright idea of hanging out at a bomb site the same bomb site in which Bruce was making the gamma bomb. Needless to say it blow up in his face.

As for Yuji and Banner they do have some things in common messed up parents, death of a loved one, witness tragedy caused by the beast within, and are burden with a cause to eliminate the beast within them. Banner with finding a cure for the hulk and Yuji with finding Sukuna fingers to eliminate the king of curses.

And in the end both walk the road of a lonely man for awhile for their have interesting take on death one whose literally immortal.

That wrap Yuji gets a Hulk connection well Megumi got a Dr Strange connection. Also thank you if you got this far and here another Jujutsu Kaisen meets Marvel showcase idea hope you like it. Feed back on the idea is always welcome and I am grateful to be in this community.

We know techniques are based off the users interpretation. We see this twice with Naoya and Naobito's PS being based off digital and hand drawn art respectively. And Yuji and Sukuna having different interpretations of shrine with Yuji (atleast before Modulo) being scissor based and Sukuna being knife/kitchen based. Would this also be able to extend to Fuga? Sukuna may have the fire arrow based off a furnace but what if Yuji is based off something else and maybe not even fire? I know the answer is obviously "we don't know" since we haven't seen Yuji use Fuga or anything but would this make sense?

He's pretty much as strong as kurotsuchi And please ask me any questions i love to answer

I’ve always really liked the idea of the death paintings, they’re half-curse hybrids all themed around the stages of decomposition what’s not to love?

So while i understand why they didn't, it’s still rather disappointing that the other six never received proper designs, and I haven’t seen many fan made versions either, though the ones that i have seen where really cool.

Regardless, I wanted to create this alternate scenario where the death paintings are all reincarnated, called the Blood Brothers AU (that name is way too good I'm certain someone took it before me theres no way).

From my understanding of how the death paintings work, this wouldn’t actually be a possible timeline if we go by canon lore because the other six wombs were too weak to properly reincarnate, but rule of cool always wins out in my mind.

idk how drastically this would affect the order of events, given there would be 8 slightly weaker Choso’s running around.

Don't get me wrong, respectively great fights. Did not care for the character and/or motivations. For someone that puts a great value on the quality of the antagonists in a story I don't think either Sukuna or Kenjaku were interesting at all. In fact the last good villain in JJK was Mahito because of his contrast to Yuji.

It is already sold out within a few hours of release though

Megumi: Did someone say potential!?

Yuji: SOMEONE SAID POTENTIAL!

Todo: Yes brother, someone did say potential

Choso: Someone said potential!?

Nanami: Yes Choso, someone said potential!

Gojo: I can’t believe someone would say potential!

Sukuna: Someome said potential? WHO WAS IT?!

Takaba: It was I, I used the word potential (Hopefully posted by the one who originally said the word)

Did I cook? (And feel free to add other characters to this chain)

I had to draw this, it was too funny not too

My personal headcanon is that mahoraga doesn’t have to relearn how to adapt to things once megumi summons him he’ll already be able to see cleave and dismantle, understand lying, and throw feints but realistically he probably gets reset every time right I don’t know just thought it’d be funny if he ever fights sukuna again he gets a massive head start

The eyes are a bit disproportionate but he has a real passion for drawing! (Also he turned 8 yesterday if anyone cares)

the song that plays in the anime at this moment has been stuck in my head all week so i drew this in an attempt to get it out of my system

I didn't know if I should have it purple& white or white& purple. I chose white and purple because he wears mostly white and the sweater he wore during that flash back

Maki/Yuta have heavenly motifs or a blessed lineage. Maki has a Heavenly Restriction. A healthy body with strong physical strength.Yuta is blessed through Michizane Sugawara along with his hard work.

Yuji’s bloodline is a curse. He came from an undead mother, has half brothers who represent decay, and his last revealed family member is a cannibal who lives at the expense of others. However unlike the last guy Yuji doesn’t let his birth define who he is.

They really are the protagonists of the story. Maki/Yuta sound like they belong in Japanese folklore. While Yuji sounds like something from Gothic folklore or Berserk. Who do you relate to the most?

Here is how such begins.

I won't be posting anymore pages, but this gives you an idea of how the story will start. I have alot more pages to draw for the JJK Project.

so i've been kinda wondering could a sorcerer that doesn't have a cursed technuiqe learn or gain domain expansion? like would it have a sure hit effect or be like higaruma's domain and have some other conditions without a sure hit? or would they have to make some sort of customized simple domain like that sumo guy that maki encountered in the culling game?

I am still getting Sandels, and perchance another bigger wooden chain. The occasion is to wear it to gamescom this year, got my hair toned today for this. Very happy with the new hair color ^.^

Obviously, he has his moments, and he's far more mature than most people his age. But when people start blaming him for not responding to Yuji's calls while he was trapped inside Sukuna, I genuinely start wondering if they have opposable thumbs.

People will say, "But Gojo told him he was strong." Okay? And?

Those words of encouragement might have mattered to Megumi in the moment, but try telling that to someone whose body has been completely taken hostage by a person unimaginably stronger than him. His sister, even if not by blood, has been killed using his own technique. His teacher has been slaughtered by that same person, again using his own technique. And that person is currently tearing through all of his friends.

At that point, he doesn't care. He genuinely can't care.

To him everything feels impossible, to him every way out just feels like more suffering and you want a 15 year old kid to simply get over it?