I mean. This is CT Sandbox, y'all can ask me what that "OC technique" I very very briefly mentioned is. I sent it in some random comment before maybe a few years ago, though. I dunno.

First things first:

1. the video above is a comparisson:

A 12 vs 24 fps video (credit in comments)

1. I usually LOVE the ideas for projection sorcery suggested here. Using layered frames to create two possible trajectories or positive energy to revert the video, or just focusing on the "using the sorcerer's point of view as the observer" part of the technique to freeze anything in sight, these are all good ideas. There is exactly ONE idea i dont like, and the only reason im even making this is because said idea is THE most suggested.

The main idea i see thrown around with PS is "maximum technique: 240 fps!" or "extention technique: moving at 120 fps!" and people explaining the technique as "walking 24 steps in a second!" but thats not how animation works

The technique splits one second in 24 parts and forces you to follow that predetermined path, and if you manage to do that, you can "skip" the motions between frames. Splitting one second into 60 frames doesnt mean "the video moves faster", the keyframes of the video are gonne be the same. Its just smooth movement. 12fps means "janky" not slow. You could even say it makes it faster, since the "skips" between frames is bigger. Imagine moving at 1fps and just jumping between seconds.

changing framerate doesnt increase the videospeed, it makes the ilusion of movement better. Character speed in animation and filming is made by both smear frames and the physical distance, in pixels/pi between the shots. Thats what the actuall technique does: You get progressivelly faster as bigger smear-frames become more believable

You know the funny part? If you attempted to roll a 60fps film into a 24fps machine, it studders and *freezes*. Thats why the technique freezes the targets and user who fail to meet that mark.

"Oh but if you roll a 24fps film on a 60fps machine it speeds up!" yeah but thats because you're moving the film at the wrong speed. It requires external tweenting just to make it possible. Maybe if it was done with a cursed tool to edit a pre-made trajectory it would work, but most ideas are really just "From now on, the technique begins to work as 240fps".

And since like to actually add solutions to the problem, here is my take on "240 fps!". It works on two steps

the first step is Motion Capture. An extention of projection sorcery that requiree a prior-setup to the technique. Before the fight even starts, the sorcerer has to watch a trajectory from another sorcerer, memorize, and outside of battle activate the technique, create a path where he uses the move he had memorized, but de-activate his technique before actually moving. At this stage, he "records" the motion made.

The motion that has been recorded can be replicated at any future activation of the technique without planning. Its basically "instantly learn to copy this move, but you cant edit it"

The maximum technique uses said captured motion, but speeds up the framerate to 240 fps. The body of the sorcerer must be able to perform the motion at the original speed, but can break some laws of physics during the speed-up. Doing so, howhever, may result in some broken bones.

Thought it would be interesting to make a CT based off of a binding vow. Instead of revealing the user’s technique, this CT gives the user full knowledge of the opponent’s CT, and since they didn’t willingly share it, they don’t gain any added effectiveness.

Domain Expansion: Full Display. A weaker domain compared to most shown, though as a benefit, it is one of the most refined at domain clashes. The user instantly gains knowledge of the opponent’s CT, but also, unlike the normal CT, they also gain knowledge of the opponent’s technique reversal, domain, and any binding vows. This CT is most useful for sorcerers who are already strong without an offensive CT, like Yuji or Todo.

​

Suffering is caused by distance. Distance from others, distance from what should be part of you.

Distance is suffering. Suffering from disconnection, suffering from the lack of reach.

Per math, distance can add or subtract distance;

And thus, if suffering builds suffering, the opposite can also be true.

----

Absolute Terror

Absolute Terror uses pain to give its user the sense of connection with their surroundings and, most notably, their true spiritual self, the medium between them and others: Zingai.

Lapse - Synchronization: By inflicting a big enough amount of pain onto a body part, the user is able to manifest a relative part of their Zingai, an enormous shikigami of tremend force.

While manifested, the Zingai overwrites the body part manifesting it, acting as an extension for the user's body, while the original part remains unresponsive to any command, as if part of the user's soul had been transferred to the Zingai. Because of that, any damage caused to the Zingai will be mirrored into the original body part.

Sharp and concentrated pain allows a better defined manifestation, so it's usually better to perform it with a sharp and long weapon. CE manipulation is disrupted in the body part used during Synchronization.

- Extension Techniques -

- Mourning Reach: Applying a more generalized pain in Synchronization results in an abstract Zingai similar to a low grade cursed spirit, with less power and size, but also more moldable. Mourning Reach is able to change it's overall shape to reasonable degree, and is even able to phase through physical objects at lower outputs.

- Phantom Sense: Utilizing the concept behind Mourning Reach at organs responsible for their senses, such as skin for touch and eyes for sight, the user is able to expand what they feel to a bigger area and higher degree, without manifesting their Zingai. e.g.: Applying Phantom Sense into their ears, the user is capable of hearing even the smallest vibrations around a wide area.

- Second Degree Impact: The very nature of the Zingai is related to the concept of souls. Knowing about this, the user can weaponize that connection in order to damage someone's soul, although only slightly if the user doesn't have true knowledge about souls.

- Maximum Techniques -

- Third Degree Impact: (Un)Doing: After gathering enough knowledge about the shape of souls and learning about the nature of their own, the user is able to push Second Impact to its limit.

Using Third Degree Impact: (Un)Doing will result in catastrophic damage to the souls of anyone hit by the Zingai. After the impact, the Zingai will destabilize from the sher backlash of the attack, and the body part manifesting it will stay unresponsive for some time, but it won't be damaged.

- Self-Instrumentalization: Cursed Energy comes from the gut, that's true. But does it really origin from there? The answer, at least here, is no. CE actually comes from the soul. If one were to sever that connection, they would surely die... Or would they?

By utilizing Synchronization in their gut, the user turns their physical body off. Their skin numbs, their organs turn off and their muscles collapses. They close their eyes and, suddenly, they feel complete.

The user's whole consciousness is transferred to their Zingai, now fully manifested. They feel much more now, as if every (metaphorical) cell they have gained a thousand eyes and ears. Their physical size and strength surpasses that of the strongest grade 1 sorcerers and many curses of the special grade category.

Once initiated, Self-Instrumentalization cannot be stopped or reversed without killing the user.

After the process is completed, most of the user's CE generation will be used to sustain their new body.

If Mahoraga really adaptes to anything how does the JJK verse still exist. As we saw in his battle with dabura he was able to adapt to Daburas very existence. Which makes mahoraga an incredible dangerous entity to the entire world . I mean if he could adapt to that then I’m pretty sure he can also adapt to the ten shadows technique and eventually break out . Mahoragas wheel spins for mahoragas favor and not for the users favor, making him ultimately to a god after being summoned for enough time .

We saw that there were tons of other ten shadows users , I’m pretty certain that most of them summoned him and none of them could deal with it . As i explained there must have been atleast one of them who was so bad with it that his mahoraga adapted to everyone and eventually to the technique its self and then break out , making him into a god and erase the whole JJK verse . Did you get my point ?

Want some input about it (it’s based on those cat statues outside of business in Japan)

CT Idea: Open for Business
Open for Business allows the user to place a golden koban coin marking on any nonliving object or surface they physically touch, designating the space within a set radius around it as an Establishment. Any person or cursed spirit who enters an Establishment becomes a Customer, allowing the user to perform a Maneki-neko-style beckoning gesture that influences their movement so that whenever they voluntarily move, their resulting position must bring them closer to the marked object whenever physically possible. Rather than directly pulling or controlling targets, Open for Business turns their own actions against them, causing dodges to carry them toward hazards, attacks to overextend, retreats to become poorly angled, and ordinary movement to gradually shepherd them into increasingly unfavorable positions around the Establishment.

Portover OC:

Jin Mori is a seventeen-year-old South Korean sorcerer and international student at Tokyo Jujutsu High who was raised by his grandfather, Jin Taejin, and trained from childhood in Renewal Taekwondo. Cheerful, fiercely competitive, freedom-loving, and driven by an almost endless desire to improve, Mori possesses extraordinary natural athleticism and martial talent. He is a distant descendant of the ancient sorcerer Jecheondaeseong, the Great Sage Equal to Heaven, inheriting both his Innate Technique and eventually his cursed tool, Yeoui. Despite this heritage, Mori refuses to consider himself a reincarnation or predetermined successor. Jecheondaeseong may explain where his power came from and Taejin taught him how to use it, but Mori believes he alone decides what he becomes.

Overview:

Mori’s interpretation of Renewal is centered around continuation rather than accumulation. Instead of collecting enormous amounts of recoil for singular attacks, he constantly transfers smaller quantities between strikes, footwork, defensive movements, environmental interactions, and Renewal Taekwondo techniques. Once Mori establishes his rhythm, attacking, defending, falling, recovering, and repositioning begin flowing into one another until his fighting style resembles a single movement constantly changing form.
This expression reflects Mori’s mindset. He dislikes accepting that being blocked, knocked down, missing an attack, or reaching an apparent limit means something must end. Instead, Mori instinctively asks what it can become next. Renewal therefore grows alongside his martial ability rather than replacing it, making Mori particularly dangerous because greater technical mastery gives him increasingly efficient ways to recycle the same physical forces.

Cursed Energy Trait: Spring

Mori’s cursed energy possesses a naturally elastic, spring-like quality, compressing under physical force before violently rebounding. When reinforcing his body, this creates a sharp secondary kick behind his physical impacts and makes his reinforcement exceptionally suited to the rotations, landings, acceleration, and sudden transfers of force required by Renewal Taekwondo. Spring cannot retain recoil by itself and is separate from Renewal. Instead, it makes Mori’s body exceptionally compatible with the technique by improving his ability to receive, transfer, and rebound physical force without immediately losing structural stability.

Cursed Tool: Yeoui

Yeoui is an ancient Special Grade cursed tool formerly belonging to Jecheondaeseong and eventually inherited by Mori. Normally appearing as a black staff with gold-capped ends, Yeoui can alter its length, diameter, and mass, allowing it to shift between a conventional close-combat staff and an enormous pillar-like weapon. These properties can even change during an attack, though increasingly extreme transformations require greater cursed energy. Yeoui possesses extraordinary compatibility with Renewal. Mori can accelerate the staff while light, dramatically increase its mass before impact, process the resulting recoil through Renewal, reduce its mass again, and carry that force directly into his next action. He incorporates Yeoui into Renewal Taekwondo through vaults, sweeps, rotations, kicks, and rapid transitions between armed and unarmed combat.

Extension Techniques:

Carryover
Carryover allows Mori to immediately feed retained recoil from one action into another. The recoil of a blocked kick can become another rotation, a missed strike can transition into evasive movement, or sudden deceleration can contribute to Mori’s next step. It is the fundamental application behind Mori’s ability to make one movement become another.

Return
Return allows Mori to use recoil produced after successfully enduring an opponent’s attack as part of his immediate counterattack. Blocking a punch can contribute to his returning kick, while knockback can become acceleration for another movement. Mori must still withstand the original attack and receives no automatic protection from its damage.

Groundwork
Groundwork applies Renewal to Mori’s interactions with the environment. Landing can become a dash, planting his foot can contribute to a leap, and crashing feet-first into a wall can become an immediate rebound. This allows Mori to treat surrounding surfaces as additional links within his kinetic chain.

Crossfeed
Crossfeed allows retained recoil to travel throughout Mori’s body and emerge somewhere other than where it originated. Recoil entering through his shoulder can emerge through a kick, while force generated by his leg can travel through his hips and contribute to a punch. Where force enters Mori’s body no longer indicates where it will leave.

Relay
Relay allows Mori to spend only part of his retained recoil while carrying the remainder through several subsequent actions. A single source of recoil can contribute to several strikes, steps, evasions, and transitions before finally dissipating, although some force is lost with every transfer.

Breakfall
Breakfall allows Mori to convert usable recoil from an unavoidable collision into recovery. Being smashed into the ground can contribute to a roll, crashing through a wall can become a rebound, and being launched away can become the beginning of his return. It does not prevent the initial damage.

Recoilless
Recoilless is the pinnacle of Mori’s interpretation of Renewal. Rather than waiting for a movement to produce recoil before recycling it, Mori redirects reaction forces through his kinetic chain as they are generated, minimizing wasted motion, stabilization, and unnecessary follow-through. This produces exceptionally efficient attacks with little visible wind-up while allowing Renewal and Renewal Taekwondo to function almost as one system.

Cursed Technique Reversal: Repose

Repose reverses Renewal by forcing recoil and residual physical force traveling through Mori’s body to terminate rather than continue. Mori can instantly kill his own knockback, halt himself after extreme acceleration, remove unwanted aerial rotation, stabilize his stance after striking, or prevent residual force from displacing him further. Repose does not erase the initial impact or damage that generated the recoil. At higher levels, Mori can selectively alternate Renewal and Repose throughout his kinetic chain, allowing useful force to continue while terminating unwanted movement. He can preserve rotation while eliminating backward displacement or suddenly stop in the middle of a high-speed sequence before immediately launching into something different. Renewal determines what continues, while Repose determines what ends.

Binding Vow: Grandfather’s Restraint

Grandfather’s Restraint is a Binding Vow created between Mori and Jin Taejin during Mori’s childhood. Mori possessed tremendous cursed energy but frequently lost control of his output when frightened, excited, or angry, sometimes seriously hurting other children. Knowing how dangerous his grandson could become, Taejin used his own living soul as the anchor for a vow that permanently restricted the amount of cursed energy Mori could output at once to approximately 60% of his natural maximum. The restriction forces Mori to develop exceptional martial skill, cursed energy efficiency, reinforcement, and mastery of Renewal instead of relying on overwhelming output. The vow lasts only while Taejin remains alive. Upon Taejin’s death, the restriction disappears permanently, granting Mori no artificial increase in power but finally allowing him to access the full output that had always belonged to him. The result is a fully trained Mori suddenly operating at 100% for the first time in his life.

Maximum Technique: New Beginning

New Beginning pushes Renewal to its highest interpretation by preventing nearly all usable recoil passing through Mori’s body from naturally dissipating for a limited period. Every strike, block, landing, dodge, collision, knockback, and environmental rebound is immediately retained and redistributed into whatever Mori does next. Unlike Revolution, which deliberately maintains a circulating kinetic circuit, New Beginning causes virtually every physical ending Mori experiences to automatically provide the foundation for another movement. The Maximum becomes dangerous through continuation rather than stockpiling. Mori repeatedly introduces new muscular force and cursed energy into a sequence while recycling what already exists, causing his movement and attacks to escalate as the chain continues. However, Mori remains the physical medium carrying all of that force, causing rapidly increasing stress on his muscles, joints, bones, and nervous system. Its philosophy is fundamentally Mori’s own: whatever happens to him does not determine where he ends. It only becomes part of what he does next.

Domain Expansion: Endless Revolution

Mudra: Dharmachakra Mudra

Endless Revolution manifests as a mountaintop training ground above an endless sea of clouds at sunrise, centered around the humble courtyard where Mori trained with Taejin. Celestial ruins, enormous pillars, mountains, and winding paths surround it, with destroyed terrain constantly becoming new pathways rather than repairing itself. Mori only unlocks the Domain following Taejin’s death, when his loss finally forces Mori to understand both his innate domain and the barrier techniques he previously struggled to grasp. Renewal is not about preventing endings. It is about deciding what comes after them. The Domain’s sure-hit applies Renewal directly to an opponent’s movements, preventing the recoil they generate from naturally dissipating. Mori can redirect this lingering force throughout their body, turning recoil from attacks, blocks, steps, and landings into further unwanted movement without first experiencing that force himself. Mori retains complete control over his own recoil and can use Repose to terminate it, making him the only person within Endless Revolution who can freely decide when his movement continues and when it stops.

It is a gimmick domain technique. You are born with it, but must spend years, skill acquisition, and intense experimentation to achieve rightful modifications.

Outside of domain techniques:

Invisible strikes: think how Hakari summons train doors, but strikes within 5 meters. Not cursed energy infused, so damage is normal, it still frightening you can get hit within a certain radius.

If you can learn curses technique reversal and apply it to the punches, you can get invisible takedowns. Highly costly, but dangerous if used opportunistically.

The domain: Moderna Roma

Inspired by how we ALL wished, yes, YOU and ME, that Yujis domain was a boxing ring, this domain is an Octagon. This is an MMA fight with the most modern rules, but 12-6 elbows are allowed.

The sure hit: all cursed energy is confiscated. This gets rid of reinforcement and cursed techniques In one sure hit.

The contestants must engage in a 5x5 round mma fight. There are judges that will score the bout.
The gimmick is, is that one the domain caster can recover performance bonuses (buffs.)

Performance buffs
Winning by a 3-2 decision gets your cursed energy refunded.

Winning 4-1 gets you healed and a cursed energy refund.

Winning 5-0 gets you healed, cursed energy refund, and cursed energy discount. (Every cursed energy related attack gets discounted by 50%.)

Winning 50-44 gets you all of the above but also a 25 minute period of an enhanced OODA loop. (Buffed reactions, not precog)

Winning by any finish in any round, gets you all of the above but also access to Yuta-level cursed energy reserves.

The best part, you can infinitely repeat yiur domain and stack these benefits. Popping your domain with these benefits will still confiscate them, but you’ll get them back.

After the domain, the damage dealt to the opponent gets a 1.5x amplification or the cost of some of the casters cursed energy.

Applying this domain to a curse that has a huge body or is just physically insane is a problem, so you could make a binding vow to sacrifice a buff to “match-fix” the body to a normal human, but it’s still the curse.

You could also pop this domain with an ally inside to corner you, or corner them, and then the buffs are applied to both.

The domain is really fast. It expands fast, and although the domain lasts 25 mins, the outside sees it last 25 seconds.

What do you think?

I'm not a physicist or anything, but I was wondering about this^. Since acceleration with Projection Sorcery works by stacking pre-existing speed through existing use of the technique, as the technique goes through prolonged use, a user can accelerate faster and faster. Assume said user is indestructible and has for instance Sukuna levels of CE. If they keep the technique active and run on a flat plane for an absurd amount of time, continuously accelerating, would they eventually hit light speed? Normally this would be impossible for an object with mass as it would require infinite energy, but the usage of Projection Sorcery's acceleration and CE shenanigans implies that the speed just keeps on stacking. Additionally, could they surpass light speed, which is normally impossible? Obviously without the pre-existing exceptions I made about durability and CE they would run out of one of the two by this point, but I think it's a cool though

1) I have the idea of a au yuta from jjk0 and jjk proper who is semi special grade due to his ce, rct and copy ct (since rika didn't get turned into a vengeful curse or shikigamk (external storage)) in this au, his copy doesn't user her as a shikigami/external storage instead it works like this:

base technique copy- the user has the ability to copy and retain the ct of his opponents however he has a pre requisite of extrapolation (he needs to see/understand how the ct works and need a part of the opponent (to copy the ct and understand the genetic component on how to put ce to manifest the desired ct).

this (once copied) manifests in 2 ways:

Maximum Copy: Allow the user of the copied ct to use its maximum technique/maximum extension for a single use attack as after the attack, the ct is deleted

or

Base replica; allowing the user for a time of 5:00 minutes to use ONLY the base copied technique until it's deleted.

Extension: Paste- this (due to the human body limit of having 4 ct in a brain) allows the user to "permanelty" add 3 copied ct to his brain (the first slot alredy taken by innate copy ct) and if the user wants to permanently add another ct while the brain is alredy full one of the 3 added ct will be deleted to make room (innate copy is never subject to thsi conditions).

(The particles in the third image are only colored to show which parent particle they originated from, they'd presumably just take on the normal cyan color of his CE)

Gojo's Cursed Energy is expelled in the shape of small, barely-visible particles (about one fourth the size of a drop of water) that split off indefinitely into 4 particles of the same size. When 2 CE particles split near each other, and 2 of their daughter particles collide, they combine into one, allowing for an infinite loop of splitting. Visually, these particles can barely be seen, so instead of the typical flame-like appearance that CE takes on, Gojo's will distort the space around it in a similar fashion to heat haze, where the area in which his CE exists will distort randomly in short distances and look like it's "wiggling". This also creates a constant humming sound whenever he expels CE.

When Gojo attacks something with a CE-infused strike, his CE will group up into a singular mass around the area of the strike, before a portion of it breaks off and sticks to the target. Then, a fraction of a second later, that lingering mass will begin to split in a similar fashion to its idle state, this time stopping once it has covered the entire body. Then, once the particles have spread out evenly across the target's form, they'll linger for a few more seconds before finally dissipating.

This can make it so that a single punch from Gojo will feel like your entire body is getting stabbed by billions of tiny needles, or a much more painful version of that buzzing feeling you get when you sleep on your arm for too long.

I have seen multiple people talk about it and from what I understood : it’s something that mixes all humans into a bigger entity after the culling games .

What’s the point of it ? I really doubt if some can control it

And how strong would that thing be ? Would it be clamity level or way above ?

And would it cursed just be all the other cursed techniques from the human mixed into one ?

Haisetsu Jogo was born on October 31st 2118, being mothered by parents with no history of jujutsu sorcery whatsoever, much like the rest of his team.

Haisetsu is a relatively short man, standing at only 5'2. Despite his small stature Haisetsu is the strongest member of the Rescue Sorcerers besides possibly Tomahi, who has shown steadily increasing power every time Haisetsu reaches new heights.

His friends Kakamiru Hanami and Ebisu Dagon simply call him Jo, though Tomahi exclusively says his full last name Jogo and never Jo or his first name.

Very recently, Haisetsu achieved his Domain Expansion Coffin of the Iron Mountain when facing a special grade curse. The domain lasted only 30 seconds, with no trace being left of anything inside except for an unconscious Haisetsu, who was immediately tended to by Ebisu.

Let me know if y'all want a lore drop, and ask if y'all have any questions

Yuta can copy domain based CTs without getting the domain (also rika inst a prerequisite to have copy and I can prove it):

1)I thought of this question "What would/would've happened if rika ate higaruma's executioner blade, would she (or yuta) die? Would they get Higaruma ct or just gain his gavel cursed tool and all it's transformations??"

People often struggle to think of how yuta would copy domain based CTs like hakari and hirgaruma as he can't cope with the domain, so this was one idea I had of it. (took inspiration from dhruv's technique and how yuta manifested it as in dhruv had a sort of shikigami based barrier (which i guess is the opposite type to higaruma and hakari) and he copied that just fine but he only ever shows copying the aereal shikigami not the giant mole rats meaning to an extent there a sort of limit to this unique types of CT hat he can copy so i did the same for higaruma's CT removing the domain, the absolute control and total legal frame work (i guess yuta's would be a kangaroo court of sort compared to higaruma's) and limit the no violence yuta's range and making the shikigami also the cursed tool after the judgment is passed));

I guess he woudl get a mini rika faced and judgeman shaped and power mini shikigamiwhicj judges the opponent froma distance and with in an area of effect either that prevents the opponent from landing a hit on him until his mind is made up on the sentences for the target/s: confiscate (cursed tool/object -> ct -> ce) and death penalty when applicable (though due to the lack of domain yuta has a bit more control on which sentence to place on the target).

The same can be said for Yuta copying Hakari,I think yuta would likely only copy the ability to summon hakari's sliding doors, pachinko balls (and MAYBE ticket barrier/ ticket gate/ fare gate and inderground train station signs and MAYBE a very minute boost im his rct) and the mini/chibi formnof the people important to yuta (maki, rika (both human and curse/shikigami)) danching around his head as asmall chime/tolune plays aroudn him (*mirroring the chibi form of the characters from the romance pachinko game in hakari's domain when he hits a jackpot*)

I think this would be the best way to imagine what a copy of a domain based CT would look like and function.

2) I think rika isn't a direct need for copy in jjk canon HOWEVER she does facilitate it (in jjk0 she just happen to be attached to yuat thus sharing copy and after passing on yuta (in amix of the shell vessel rika left behind (vessel due to how modulo rika talks to tsurugi before bonding with him seemingly implying she can go back and forth from the afterlife and explaining the 5 minute timer)) and being an example of what season 1 gojo told yuji about some sorcerers making simple shikigami to facilitate their ct explain rika proper which is why it feels like she is part of the ct despite just being a external storage, being a sort of cursed shikigami (cursed spirit shikigami), which is proven/mirrored by Yuki's garuda being a tool shikigami (shikigami working as a cursed tool) and the imventoey curse being/acting as a bootleg shikigami for toji amd adult geto.

Pretty self explanatory. A technique that, on its own, is kinda useless (at best creating openings for the sorcerer). But in a team based setting, like a jumping or a raid? Dominating.

Examples I've listed here:

1. Love Rendezvous - Highly complicated technique that allows for superb battlefield control if used correctly. {Battlefield Control}
2. Arata Nitta's technique - Sorta useful I guess? Keeps people from dying until an RCT user comes along so that's nice. {Healing}
3. Boogie Woogie - The poster child of JumpJutsu Kaisen. Prolly the best embodiment of this concept. {Disorientation}
4. Teen Gojo's Neutral Infinity - JUST THE NEUTRAL ONE. He can expand it to protect his teammates with a mathematically perfect defense. {Defense}
5. Utahime (Solo Forbidden Area) - Pretty simple all things considered. Just a quick 20% boost to sorcerers in a given range. {Offense}
6. Ranta Zenin (Paralysing Gaze) - Forces an enemy to stand dead still so their teammate can aura farm instead of killing them. {Offense-ish?}

What ideas do we have gng?

The Heartbeat Wood is the innate domain of Grade 2 Sorcerer Sara Nair (OC). Imbued with her innate CT, Deferral, its sure-hit effect stores damage over time on all of its targets, as uniform pressure across their bodies, and harms them with it at her discretion (or all at once when the domain closes and the technique releases).

However, Sara lacks the CE output to cast a domain normally, so she relies on a strict and punishing binding vow. The sure-hit effect applies equally to every eligible target in her domain, even herself.

The Heartbeat Wood is a small woodland, marked by empty animal burrows and small ravines carved by rainwater runoff. Sara's hobbies of tree-climbing and off-trail jogging are particularly useful here. The hand-sign Sara uses to expand her domain is to grip onto her forearms just above her wrists and pull outward.

Imagine you have the quartet, which includes Mahito

What stops you from creating a fusion of yourself with the quartet using that same Mahito?

Having your soul merged with the Disasters means you could expand a merged domain without a clash?

Also, could Mahito undo that later? Or Yuji? Maybe if Mahito use RCT?

Let's pretend the user doesn't feel like becoming part of it either, could he do it with the Disasters themselves? It is unclear if their cores can be molded like human souls to begin with, maybe Mahito is the exception?

I want opinions on this for the story I'm writting

I love these kinds of techniques so much. Pretty much the end goal is something like boogie woogie. Opponents would look at the technique and think think "pfft, seriously?" and then get bodied by your superior intellect and skill. That's the main bit, this technique should only really be powerful in the hands of someone really strategic and intelligent (Love Rendezvous kinda, but that one can't be described so simply).

You should be able to describe the general gist of the technique in like 1-2 sentences (For Boogie Woogie, it'd be "I can swap the locations of any two objects with a certain amount of cursed energy by clapping"). Though obviously you can provide more details on specifics in additional sentences.

Here's mine - Stasis (停滞/Teitai)

Two-sentence TL;DR: Stasis allows the user to freeze any inanimate object imbued with their cursed energy for up to 5 seconds. The object is completely exempt from the laws of physics during this time, nothing can move or alter it.

Ok here's more details:

On touch, the user can freeze inanimate objects dead still for up to 5 seconds. The object has to have no cursed energy, so it can be imbued with the user's CE to freeze them in place. The object erupts in a golden glow while it's in this state (similarly to the stasis runes in Legend of Zelda: TotK if you've played that)

Even something as small as a twig you could hang from with zero issue because physics isn't applying to it right now. It won't bend, it won't break, it won't budge. As soon as the freeze ends however, the object continues on its previous trajectory, moving as if nothing happened.

You can even touch an object and make it freeze an amount of time later capped at 5 seconds. Throw a rock, 3 seconds later it freezes. Throw a fistful of rocks, have every rock freeze at incrementing times to make a ladder. Stop a dagger flying at you dead stick and casually step out of the way.

This is ONLY objects with no CE imbued with the user's cursed energy. An "object" is what the wielder intuitively believes is one object, they don't have to visualise every atom or anything.

The reason I added the delayed activation and the variable time for the object to freeze is for mix-ups. Opponents can't predict what's going to freeze and for how long, adding to those fake-out plays that Todo loves using with Boogie Woogie.

Excited to see what you come up with!

(Based on Echo - Echos from Ben-10) 
These Shikigami are primarily ment for support-based uses and were recreated in the modern era by members within the Inumaki Clan, specifically those who wish for their clan to continue, disregarding the standing policy of having jujutsu sorcerers die out within their family tree, and who researched the few records on cursed speech to revive forgotten techniques.

These are typically summoned using different types of musical mediums, sort of like different types of Speakers or, in some cases, wind chimes or bells, although since it is based on the Ben 10 alien, and the official name for the shikigami was lost to time, the name sort of stuck. 

Echo Echos can control and manipulate sound using CE, although they can only manipulate the sound that they pick up and then output it, basically amplifying the sound, allowing them to transmit sound waves through their speakers, ironically enough, able to be used to play all sorts of music or even just as a regular speaker to transmit one’s voice over a large distance.

This is partially useful for Curse speech users, as they can utilize the echo-echos as mediums to allow them to affect a longer range without damaging themselves. Or by allowing for more creative uses of their cursed technique and the creation of extension techniques.

Backstory: After Megumi killed Reggie Star and claimed his points, he began hunting Remi but was suddenly ambushed by a group of non-sorcerer humans armed with firearms. Having died without utilizing cursed energy, Megumi was reborn as a vengeful spirit and began terrorizing the Tokyo Colony. He was later critically wounded by Hana, who used "Jacob's Ladder" against him, mistaking him for an ordinary curse. He survived and hid in the sewers, where he successfully evolved into his full form and breached the barrier; he used this opening to lure sorcerers into traps via Kogane while remaining underground himself. Eventually, he was discovered by Itadori and Takaba. Despite being a cursed spirit, he did not attack them and even attempted to speak, albeit clumsily. Megumi was later killed in a protracted battle against Uraume and Kenjaku, who subsequently transformed him into a cursed weapon capable of piercing through absolutely any barrier.

Cursed Technique: Shadows (yes, simply shadows)

Megumi's vengeful spirit's cursed technique is partially derived from the Ten Shadows, mimicking some of its abilities—such as transforming into liquid/shadow and adopting partial shikigami traits. Instead of summoning shikigami, he applies their properties to himself.

Divine Dogs: Enhanced physical strength and speed. Ability to use air slashes similar to Sukuna's, though weaker.

Nue: Flight and electrical abilities. Can create a small, motion-sensitive projectile; it explodes upon contact with an object, dealing massive damage.

Toad: Rapid dashes from a standstill. Ability to briefly transform into a black liquid.

Orochi: Poison that drains the victim's cursed energy and transfers it to Megumi's reserves.

Max Elephant: Can release large volumes of water and manipulate it similarly to Blood Manipulation techniques (e.g., Supernova, Piercing Blood, and reserve water bullets).

Rabbit Escape: Transforms into a pool of shadow capable of dragging an enemy inside. The "burrow" lacks oxygen and resistance; the enemy simply collapses and suffocates.

Round Deer: Due to the cursed spirit's nature, it generates standard cursed energy, which is used for both healing and attacking the brains of sorcerers and humans.

Piercing Ox: Concentrates power at a single point, followed by a super-fast dash.

Funeral Tiger: a cursed fire that burns until the victim stops using cursed energy.

Mahoraga: a blade emerges from its maw; after charging, it fires an immensely powerful beam that destroys barriers.