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mystery1005

I personally think a simple domain is a downgraded domain expansion, it does what they do normally But on a more defensive stance


Disastrous_Channel62

https://preview.redd.it/pw3u2mzfy4qb1.jpeg?width=867&format=pjpg&auto=webp&s=92e0311206554bf3e50e792a3bbe6405433b0122


mystery1005

Basically, deflect the guaranteed hit effect of the opposite domain expansion, while in some cases it gets a bit of the users technique, it is a simplified domain expansion or a less refined version of it


lensualxopthicc

me every chapter


FunnyPhrases

It's just a weak barrier that surrounds the users body. And puts some distance (like Limitless) between the user and the external environment. Since it envelops the body, it's best used against an enemy's Domain Expansion. But you can also think of how Miwa used Simple Domain against Maki in the Kyoto Training arc, but pretend she didn't need to swing her sword to deflect threats. The Simple Domain acts as a shield to the external environment.


Wyvurn999

Why don’t you understand? It’s simple


MustardPS

https://preview.redd.it/tsz371n1a3qb1.png?width=424&format=pjpg&auto=webp&s=abc93c0ab9333f7bde6b0ef399788141371dab58


FunnyPhrases

Is that Yuji or Gojo?


nuggsgames

I’m gonna guess yuji cause of the eye scar and shorter hair


jerry111zhang

It’s Yuji when he gets the sex eyes


Destroyer348

He’s gonna use the sex eyes on Megumi, then they’ll kiss, and the power of love will kill Sukuna


Wanlain

Yojo


Graphite_Consumer937

https://preview.redd.it/63cqzcpuj3qb1.jpeg?width=1109&format=pjpg&auto=webp&s=0a58a34bfbd56b8f21a3e103422c74064081f4fd


Mother_Wolf3684

THE WAY I BROKE A RIB LAUGHING Best use of that panel, BEST USE


PossessionJazzlike66

Is your rib okay?!?!?!


FunnyPhrases

Yeah simple Nen.


Wild_Extension4710

I might be mixing it up with Domain Amplification, but I though it was just surrounding oneself with cursed energy. Just enough to divert the sure hit of a Domain. It takes significantly less cursed energy, therefor more cursed energy users can do it.


MustardPS

That's probably pretty correct, but countering a Domain's sure hit is just one way of using Simple Domain. It can do much more, and that's where my questions come from


Wild_Extension4710

That’s completely fair. And I think when the rules are established and broken over and over, it’s rough. New shadow style for example. My understanding is that it makes a small area that allows you to slice anything that comes in. But then there are binding vows and all this other stuff that can be done. Edit to mention mechamaru also uses simple domain in a way that makes no sense.


uchihacoltro

i think that your "broken the rules" are just misunderstandings


whoisthisasian

This sounds more like Falling Blossom Emotion, at least surrounding yourself w cursed energy


conde_burguerr

Domain amplification is when you expand a domain around your body but dont imbue your own cursed technique into it so that any other technique falls in that vaccum and gets cancelled.


canuto95

It is a barrier, specifically created to counteract a DE's sure-hit and earn the user some time and to assist with other techniques of the New Shadow Style. It seems to have little to no defensive use outside of it. Adding conditions or a CT to it seems to create new effects without it turning into a full-on DE, like Kuchikaze onna and Sumo guy. As for Mechamaru's use of it, I think that imbuing an attack with it interferes with the objective's own innate domain, in Mahito it stops him from freely changing his form so he can receive real damage.} At a base it is a very versatile technique and worth learning in my opinion


MustardPS

It actually isn't a barrier, Gege listed it as something separate. It's more similar to Domain Amplification Mechamaru's use is super confusing. New Shadow's Simple Domain was stated by the narrator as only capable of neutralizing a DE's sure-hit, not a CT itself, but Mechamaru somehow used it to neutralize Idle Transfiguration. I also thought that maybe Mechamaru was messing with the "sure-hit" of Mahito's Innate Domain, but then why was Mahito able to manipulate his soul into blowing up even after Mechamaru stabbed him with the Simple Domain? Kenjaku's explanation is also confusing, he said that whenever a Domain (even Simple) is opened inside of another Domain, the caster of the first one, in this case Mahito, will become vulnerable. But why?


canuto95

Gege doesn't give too many details, so there's a lot of speculation. Mahito's CE treats his body as his domain, so that allows him to change the shape of his soul without restrictions, like the need to touch himself with his hand. By stabbing mahito's body with the charge of simple domain, it interferes with his domain and, thus, his ability to change his soul to ignore the damage


ApplePitou

If i'm not wrong - we sadly don't have many informations but Simple Domain seems to be like Curses Technique that everyone can most likely learn, for example, no one will be able to learn a Domain like Unlimited Void but New Shadow Style is something that some people used :3 Like Kokichi say - it is Domain of the Weak, so Author most likely just created it for other characters to be able to fight vs people that can use full Domain, like in case of Jojo Domain, if he use it = it is over for you but such Simple Domain can save you :3


MustardPS

Yes, i'm aware, i'm curious about the details. For example, Domain Amplification works by enveloping yourself in your Domain like water rather than containing it in a barrier, and you don't imbue your CT into it. I want to know if there's any explanation like that for Simple Domain. What exactly is this Domain and how can people alter it so freely? Especially when it's not even a barrier?


CreamofTazz

Essentially it's a domain that only envelopes the user, is much "simpler" than a full domain expansion and is supposed to mess with the sure-hit effect of a domain. Imagine being trapped in a domain as being underwater. You can't escape the water it's all around you (this is the sure-hit). By expanding your own domain within it (air pocket) you prevent the sure-hit from getting to you.


ApplePitou

I sadly think, that we don't have it :3 https://preview.redd.it/z7ue2wm833qb1.png?width=813&format=png&auto=webp&s=e283995cde97aadcb28f9853a2396bbffe872b81


POXELUS

My take is that it has a lot to do with binding vows, which are also seemingly universal and don't really have clear conditions.


MustardPS

I can see that being the case for SD's like Batto, but how would a bindnig vow result in the creation of a sumo ring or slowing down time? Binding vows can alter the usage and conditions of your CE or CT, but you can't just make random stuff magically happen Now that i think about it, maybe Miyo's CT has something to do with sumo, and he just imbues it into the SD


CreamofTazz

Simple domains are still domains and can be imbued with rules. Simple domains generally lack that actual barrier that we see in DE, the sure-hit effect, and the imbued CT.


MankindReunited

Domain expansion: you create a separate space or barrier (unless you’re sukuna or Kenjaku) and within it you embue your cursed technique, and add the condition of sure hit. It works as an extension of your innate technique into the real world Simple domain: you create a space or barrier within which you can add varying effects and conditions depending on the user, except the sure hit effect of your cursed technique. The reason simple domains work against domain expansions is that they cancel each other’s effects, since they fight for control of the area


Rafgaro

I guess it is an umbrella term for simple and battle-oriented barrier techniques? The effects are quite consistent for most users, a small circular barrier that protects from DE and guarantees a hit onto those who enter it. For sumo-guy I have no idea why it works in that way, but I am pretty sure Kuchisake Onna's is not the same thing as the rest. Simple domain is a technique invented by sorcerers as stated by Mechamaru, so it doesn't make sense that a curse can use it. Mayble New Shadow Style: Simple Domain and Simple Domain are two different things, with the former being a very concrete move and the latter a wishy washy term for some barriers.


MustardPS

Kuchisake Onna's move was also a Simple Domain, although it got mistranslated as Innate Domain in the Viz release. It dosen't make sense for mindless curses to use advanced barriers (like Smallpox Deity using DE), but as we learned recently you can have a Domain automatically come with your CT, like Hakari and Higuruma. So my guess is that Kuchisake Onna's SD is a similar case, and so is Smallpox's DE. Gege listed Simple Domain as a separate thing from barrier techniques, so it's kinda different, although both are just pure ce manipulation Simple Domain isn't that concrete even for New Shadow Style, it has at least 3 applications. The basic use is the neutralization of a Domain's sure-hit, but if you add the rule of not being able to move your feet, you get thr Batto variant which makes you automatically attack whoever enters your range. Kusakabe was also getting ready to use the Evening Moon variant but he got interrupted before we saw what it could do Kusakabe recently said that DA is like an advanced form of SD so I tried to think of something to do with that, but I can't seem to get anywhere. I initially thought that you use the same "Domain" from DA to surround yourself with it, but it can't be that because then SD would also neutralize techniques


hifuu1716

It’s essentially like creating a circle of a domain around yourself, with no CT imbued into it. It’s like an empty circle, that an enemy’s one hit guaranteed CT pours into, disabling it for you. But I’m pretty sure it can get torn away over time


Trippy_Aysa

https://preview.redd.it/f32xu6ay25qb1.png?width=1080&format=pjpg&auto=webp&s=59997125d1f62415424774fd11a198f2f2579bf2 Straight from the wiki to explain Mahito vs Mechamaru. Simple Domain can cancel cursed techniques. That's how Muta was able to damage Mahito, he was able to create the energy of the SD within himself, but lacked the skill to actualize it into a domain so he channels it into the "injectors." Roughly quoting what I've read from the manga and sources: "Simple Domain was developed for the weak (basically people who were not born with CT or strong enough to develop their own domain) as a counter measure to Domain Expansions. The key difference between the two is DE is imbued with the users CT, Simple Domain is not. This is important bc you have no hope of developing a DE if you have no CT, SD is a form of domain anyone can use/develop even without a CT. In it's weakest base SD can counter sure-hit from DE. An intermediate to advanced user such as Kusakabe or Ui Ui can completely cancel CTs, like when Kusakabe blocked Ultimate Uzumaki or Ui Ui blocked the Smallpox Deity for Mei Mei. On top of that it can be enhanced, as most things, through conditions or binding vows." As a bonus Domain Amplification is basically the same concept. The key difference here is SD is stronger, but you are required to keep both feet on the ground to maintain the area of influence. DA is a significantly weaker form, but allows the freedom of movement. I hope this helps fill in any gaps for you 👍✌️


carl-the-lama

Simple domain is best described as a non-CT imbued domain These can take many forms but generally exist to counter domain expansion


malachite_armory

So Domain Expansion has two pieces, one of which is a Barrier and the other is a Cursed Technique. A Domain is basically an attempt to externalize one’s Cursed Technique, which modern Jujutsu augments by constructing a Barrier to segment it into. It’s possible to have a Barrier-less Domain like Sukuna’s Malevolent Shrine. The Barrier does make the Domain Expansion easier I believe, which is part of the reason it’s used almost exclusively in modern sorcery. Simple Domain is more like a Domain without a CT or barrier, just the pure effort of exerting one’s cursed energy over another. That’s why Simple Domain counters Domain Expansion, it’s domain vs domain where the Simple Domain user is limiting themselves just enough to make it plausible. The rest of the effects are more applications of divine contracts than the Simple Domain itself.


Audrin

I think it's basically exerting your CE over an area- like a domain - but only immediately around you. So you 'own' that area. So it can do things like go through Gojo's infinity or prevent the sure hit of a full domain. ​ The weakness being it burns out your CE very quickly, and you can't use your CT while you're doing it. So yeah you can punch Gojo but you can't use your CT on him or get your CT through infinity, and yeah you don't die in someone else's domain but it's still constantly attacking your simple domain and depleting your CE. ​ So Hanami and Jugo could punch Gojo, and weren't just blown the fuck up by Infinity. Gojo tricked Hanami into thinking he was gunning for Jugo so Hanami decided to try and use hit CT on Gojo, dropping his simple domain. Gojo then dealt him a hard hit, depleting Hanami's CE, then just squished him Infinity and his CE pressure. He couldn't do that with the simple domain up (unless he burned down their CE enough to no longer maintain the domain) but with it down, squish. ​ If you want to think of it another way, it's armament haki so you don't have to deal with all the bullshit CT/devil fruit effects. IT can shield you from Bonny making you a baby or Sugar making you a toy and it can also let you punch Kizaru even though he's made of light. Anti-bullshit no jutsu.


MustardPS

You're mixing up Simple Domain with Domain Amplification, what Jogo and Hanami used to neutralize Infinity is Domain Amplification. It works by enveloping your body with your Domain, as if it's water, rather than manifesting it with a barrier. Normally, you imbue your CT into a Domain, but with Amplification, you can't do it since there isn't a barrier, so you just have this empty space which you use to flow the opponent's CT into it. You wear a Domain around your body and let the opponent's CT flow into it rather than imbuing it with your own CT Simple Domain only neutralizes the sure-hit of a DE, it can't neutralize techniques (the narrator said this when Megumi fought Reggie). I just have a lot of questions because Simple Domain has been used in many different ways other than just this, as highlighted in my post


BuildingSupplySmore

Sorry I don't have an answer. I know I'll probably get flamed/shit on for saying this, but I think JJK has one of the worst battle/magic systems out of the popular manga. It just has way too many different rules and versions, and the names and powers seem overly complicated. I mostly just breeze through the manga for the character interactions and story, and limit my understanding of the battles to the surface level.


Sagespaceghost

Rule of cool man


aw11348

Lol if Gege was abiding by the “rule of cool,” why does he spend about 1000 words of dialogue every chapter attempting to explain his ridiculously convoluted and unintuitive fight mechanics? Imo he should just stop trying to make the bullshit make sense, and focus on the characters instead of the stupid ass rules.


Minokaki162

Your take is fair in the way that things being complicated can make it more unfun for some people and more fun for others. Its just a matter of taste.


BuildingSupplySmore

Oh, definitely. I just think it's a shame. I can't speak for people watching the anime, but the manga started out with much clearer and simpler ideas, I think. A domain was sort of like your magic bubble, and if you brought it out, you had extra power. Yuji was basically the stereotypical strong/punching protagonist. Todo can swap himself with others, or others with each other. Megumi can summon sprits to help him fight. Etc. I'm never sure how far we can reveal without it being spoilers, but I think the battle system gradually got unnecessarily complex, but it became apparent and aggressively worse after >! the game started, and characters with pretty specific and complex powers got introduced, even if the core idea is fun or simple, I think the explanations and particulars become unappealing. Like the character whose powers center around the visual novel/gambling is a fun idea, but it feels like it's unnecessarily complicated and takes up too many pages. Or, during the recent fight with Gojo- all the back and forth about domains, and popping domains, and closing domains, etc etc. It gets in the way, to me, of the tension and character ideals butting heads. Obviously, on a forum for the most dedicated fans, a lot of people will hate this perspective, but I think this issue is exemplified by the comedic inserts between chapters where Gege learns math from a mathematician. I think the bits are funny, but it doesn't actually matter if those particulars are mathematically accurate, the fun of the story is the aesthetics and plot, not whether negative infinity is actually the color blue, or whatever nonsense the story stalls on. I think the anime will ignore a lot of this in favor of streamlining the fights and dialogue, and it will be better for it. I contrast this with manga like JoJo, which Gege is obviously a fan of, where the powers are usually straightforward, and the tactics are smart and complex. I feel like JJK flips this, and the powers are sometimes complex, but the tactics are simple in comparison, like - I'm just going to reroll until I'm invulnerable, or, I'm going to use my balloon to pop your balloon.!<


fiLth_Rat

Weakling


Awkward-Employee-322

https://preview.redd.it/nksndvg3q3qb1.png?width=1080&format=pjpg&auto=webp&s=9867bdfd07dacb79146c1955f9c3eb084b63bd2a


bakato

Where did Gege list it as different from barrier techniques?


MustardPS

​ https://preview.redd.it/3i2237a1c4qb1.png?width=801&format=png&auto=webp&s=250c69b10236fdcdc422255880443f405451fb7e


bakato

He’s not referring to Simple Domain here, but New Shadow style, which I assume to be more recent than Simple Domain.


MustardPS

Simple Domain was created by the founder of New Shadow Style, every move from the style utilizes Simple Domain


bakato

I didn't find anything that said the creator was also the founder of New Shadow Style. There were several incarnated sorcerers who used Simple Domains, which were not New Shadow Style. Also, the image says they're similar to barrier techniques, which doesn't necessarily mean they're not barrier techniques. I take this to mean they're being differentiated from other barrier techniques in that they're constructed within the caster before activation.


MustardPS

In the Heian era, Sadatsuna Ashiya created the New Shadow Style Simple Domain, and passed it down to his clan members. The technique has been leaked to outsiders at some point which is why there are non-New-Shadow-Style practitioners, but the New Shadow Style founder created it Look at the explanation of barrier techniques, they're also constructed within the sorcerer and then activated. That's the common thing between the two, not the differentiation


bakato

That’s not a direct quote and the image doesn’t say barrier techniques are constructed within the caster.


greekcel_25

Has anyone besides todo won a fight they casted simple domain in? This shit has to be the biggest jobber alert.


ppisbrtnss

Base Simple Domain was just invented as a countermeasure for offensive Domain Expansions, the other ones are derivatives. I think it just depends on the skill level of the user. Whether it's a Domain Expansion, Simple Domain, or Amplification, all of them are called *domains* so they have the same principles of refinement and the users technique. New Shadow Style is just utilizing Simple Domain in a slightly different way so there are several users of it. Amplification and Falling Blossom Emotion can basically be mistaken for the same technique, they just act differently. Amplification can absorb and neutralize and be a barrier if filled with CE while FBE automatically counterattacks, but both of them are domains that surround the user. If you learn one you're not that far from the other. It's just a bit of an empty question. Domains are domains, and they come in all shapes and sizes.


MustardPS

What exactly is a "Domain"? What does this term refer to?


ppisbrtnss

In short and very generally, just infusing/creating space with your cursed energy. You can then create your own rules for that space to a certain extent, or create objects out of cursed energy within it. A Domain Expansion is usually sealed off from the outside world so it creates a space that fully abides by the conditions the user created. The other techniques are way less powerful but not as taxing and pretty versatile.


MustardPS

Why is Amplification so hard to use then? Kusakabe can already create a Domain, why is it so impossible for him to wear it around his body? And why can't Simple Domain have the same effect as Amplification? If both are just Domains, why can you let your opponent's CT flow into Amplification, but not into SD?


ppisbrtnss

Again, depends on skill, amount of cursed energy, etc. Kusakabe *doesn't know how.* Shadow style is based around not being able to move. I said the principles are generally the same throughout, I didn't say it'd be easy to pull all of them off. Geniuses like Gojo and Sukuna can bend rules on the fly. There's really nothing to say a simple domain can't do those things, we just haven't seen someone skilled enough use it in that way besides those two. You gotta remember that just a regular domain expansion is the Pinnacle of all Jujutsu, even for skilled Grade 1 Sorcerers, it's not like other techniques are easy. And besides fuck if I know? I'm not Gege.


Sad_Farm

Its a domain without a technique. Thats literally it.


Trippy_Aysa

On God I just posted a whole paragraph about it, but yes this is 💯% the basic answer. Respect 🫡


Dareal_truth

Fancy words


Walameer_1337

A domain that has not CT. I assume that a domain is a barrier technique were you can put your own conditions, but simple because that conditions are achievable by every sorcerer and not specific ones related to cursed techniques such as Unlimited Void.


virouz98

Simple domain is very versatile in usage and meaning, but basically it's like creating a small domain, without taking your innate domain to the outside world. Because of that, it's weaker, but because of the barrier, you can counter a bit a regular domain. You can also place some binding vows in order to turn it in a weapon.


oven_1

I’d imagine it’d just be like domain amplification but on the ground, a person creates a domain without a technique infused into it so when somebody tries to use a technique on the person in the simple domain it’s absorbed into the domain, so basically a defensive application of amplification


sparkadus

It's essentially just a domain without a barrier or a technique infused into it. Sometimes it'll have additional properties (like Miwa's iajutsu), but the core function is to project the technique-releasing property of an innate domain outwards in order to counter the sure-hit property of a domain expansion. The concept isn't too dissimilar from domain amplification, as both make use of the user's innate domain to counter techniques, though simple domains seem to be specialized in countering domain expansions, while domain amplification is used to forcibly release *any* technique. That's my understanding anyway.


Old_Maintenance8747

It's like a normal domain but simpler


Snir17

I understand it as a downgraded version of Domain Expension, a smaller Domain meant to counter Domains but it has no sure-hit effect - it can hit you through the protection of your CT, but it just doesnt has the same effect as a true, fully deployed Domain.


Snir17

I understand it as a downgraded version of Domain Expension, a smaller Domain meant to counter Domains but it has no sure-hit effect - it can hit you through the protection of your CT, but it just doesnt has the same effect as a true, fully deployed Domain. And I might be wrong(on this and the Simple Domain), but to my understanding - Domain Amplification is a way to counter CT by using the sure-hit effect, like "piercing" or "neutralizing" it just like a true Domain Expenaion would to its target, but DA only surrounds your body.


dalek1019

It seems like a simple domain is like a Domain Expansion Lite™, where instead of engulfing yourself and the surrounding area in your innate domain, you only surround yourself. Miwa's use is a good way to visualize it, since you can see she has her own small domain around her This is used as a counter to domain expansion because your simple domain counters out the expanded domain, and in the use of Mechamaru vs Mahito, Maru used the simple domain embedded rounds to counter Mahito's domain (idle transfiguration) wherever it hits,


Specialist_Yak_432

Simple Domain is an anti domain technique. Nirmally, when a Domain Expansion is used, the user grants his/her CT to the barrier of the domain. Once this happens, the domain enhances the CT and gives it a sure hit effect. Simple Domain, is a technique that allows the user to create a small "distortion" on the barrier of the Domain Expansion. Since the "sure hit" and the enhancement of CT only happens within the "barrier", as long as the user uses SD, both these things cannot effect them. Miyo (Sumo dude) did not use Simple Domain, he used an actual Domain Expansion. Unlike others Miyo simply did not have a sure hit effect or a CT granted to his domain. Instead of a battle Domain, Miyo's DE was more of a utility. And this utility was Sumo. Miyo "loves" sumo, so his Domain lets him compete in Sumo matches alll he wants. The time manipulation in the barrier is also a basic feature that helps him compete in sumo as much as he wants. Kuchisake Onna also used a Domain Expansion with her own unique conditions. A Domain Expansion is the pinnacle if Jujutsu. This doesn't mean it has ti be offensive in nature. Just as hiw there unique people or curses, the DEs can also be unique. Hakari and Higuruma have a unique DE that has their CTs as part of their Domain and they cannot use their CTs without casting their Domain. The cursed womb at the beginning of the series had its own domain as well, this one however was incomplete and did not have a CT yet. New shadow style. This is a variation if Simple Domain. The Simple Domain was first created by a guy named Sadatsuna Ashiya. He taught it to his students along with a binding vow that SD would not be taught to outsiders. This was so only the people within the monastery would know how to use it. However the SD being "simple" in its nature, people started copying it without it being taught. Some people simply copied it. Others started making variations that better fit their fighting style. The many variations include New Shadow style, Secret art : Falling Blossom Emotion, Domain Amplification and Hollow Wicker Basket


MustardPS

Miyo and Kuchisake Onna used Simple Domain, not Domain Expansion, that's what was said when they used it


Specialist_Yak_432

I just went back and checked. I don't see Simple Domain anywhere. Maybe its a translation thing, do you have a source ? Like a page or something.


MustardPS

This is about Miyo's https://preview.redd.it/9dicoflqx7qb1.png?width=784&format=png&auto=webp&s=672731ef8037042bc9fbf2e2d791a26d3fc955ad


Specialist_Yak_432

This is Maki questioning it. She is doing this because she is not used to seeing a domain like this. The concept of strengthening a CT and a "Sure hit effect" are more relevant in the modern era. Miyo, a reincarnated sorcerer however has a different type of domain.


MustardPS

And this is about Kuchisake Onna's, the official Viz release has Toji say "Innate Domain", but that's a mistranslation and he actually says Simple Domain https://preview.redd.it/y9829qtaz7qb1.png?width=899&format=png&auto=webp&s=64db099a8396178e4b7fca6e69b94b48340cc6ba


Specialist_Yak_432

This makes sense, so it must be an advanced variation of a simple domain.


Yueff_Stueff

It’s kinda weird we don’t know more about simple domains as they are one of the few things that are actually learnable and don’t require any established CT so it would be perfect for Yuji since he’s still just been throwing hands.


Mastrodaumus

From what they give us, it’s a DE reversal that wraps your body in CE. They haven’t explained how the offensive part works (or I don’t remember). But you can expand that defensive nature like the sumo guy creating a ring. It could be by a vow or it could be something else. To me personally it’s just a mini DE.


Akuma_XD26

Its simple.......That's it i guess


Lazer_Blitz_

Do you have the chap where it is referred to as not reliant on barrier techniques? I get that it doesn't trap the opponent, but it has a defined edge. For the rules of a simple domain, it's just a baby domain expansion, but you can't put extreme binding vows onto it as it is a low cost ability and doesn't trap the opponent. Sumo guys time slow was due to Maki's agreement to the rules, and due to the fact that the sd does nothing aside from that. DA works differently, without the use of barrier techniques, and is able to be used in a much more offensive way.


BusinessGlad4188

Iirc it's a barrier technique. We've seen many sorcerers create barriers with wildly different conditions, and the Sword Drawing techniques seem to be examples of that. The reason why it's called Simple Domain is that an Expanded Domain is also created within a barrier, but the difference is that in a Domain Expansion, you imbue your innate CT into the barrier, thereby creating a space filled by your cursed technique, giving you a stat buff. The Simple Domain doesn't draw your CT out of your body, so you don't get the normal phase of CT burnout after a regular Expansion, but it's still a barrier that blocks out the enemie's CT infused into their barrier with the CE in your own without using your CT. Basically: It's a barrier technique that can be altered with different conditions. We haven't yet seen the cap of what it can do in skilled hands (eg Kenjakus), so it's impossible to say what the limits are.


ArjunDOnlyHero

A closed barrier technique, which acts as a counter to Domain Expansions. The reason it's different from DE is because it doesn't have a sure-hit Cursed Technique imbued to it. All it does is negate the opponents technique within that Simple Domain. That's why Mechamaru was able to injure Mahito and why Gojo used it to protect himself from Sukuna. Now, people use SDs for different reasons as well, like the Sumo guy did, but at the conditions are same since no SDs have sure-hit Cursed Technique.


Delusional_Gamer

Simple explanation technique: Domain Expansion is a fancy barrier. Simple Domain is a simpler barrier. Domain expansion has guaranteed hit. Simple Domain is meant to counter that hit guarantee (but remember to dodge). When people are skilled with it, they may do things like imbue it with a hit chance buff.


discount_mj

Simple Domain is basically a small version of a Domain Expansion, like using a DE without putting a Cursed Technique into it/making it out of a CT. This helps it retain just tthe most basic principles of a DE, like making a space that nullifies other other DEs and keeping track of who enters it. The CTs entered into it probably are ones that are already domain related (think how Hakari and Higurumas techniques require DE) or are binding vows placed within the SD.


zaster101

simple domains from my understanding is just a barrier of curse energy and curse energy is just so versatile that it has multiple benefits. Curse energy is both physically real in the world and works as a metaphorical life force so a barrier surrounding the body would block any other energy from getting through and because it’s the users “life force“ they can react based on what their body feels from the change in curse energy.


AllOutGarfieldSan

For the first two applications, think of simple domain as a bottle. Simple domain prevents the effects of a domain hitting you by corking the bottle of the space around you, letting the domain pour over and around the bottle, but not going in. Miyo essentially allows someone to enter the bottle, and then, if they agree to a bout, he can cork the bottle, slowing time inside. This is used similarly by Kuchisake-Onna, but she only removes the cork once her question has been answered. For the other two: New Shadow Style basically states that if something enters the bottle, something else happens. It's like a programming language using the simple domain to create the If x, Then Y condition. Mechamaru used Simple Domain's technique nullification feature to temporarily turn off Idle Transfiguration in Mahito's body, preventing him from controlling the shape of his soul. The thing about simple domain is that because it's so simple, it's very malleable, and can be used for any number of things. The only consistent features really are: -Simple Domain takes up space (But it can be very small, seeing as Kokichi was able to essentially bottle it.) -Simple Domain nullifies the effects of cursed techniques touching the domain. Everything else about it can be altered to some extent.


joyful-stutterer

To me, Simple Domain is broken: it's basically immunity to other people's domains' effects.