Cursed Spirit! They are creatures born from the negative energy present everywhere thanks to the guidance of the world itself.
Made of cursed energy, those spirits contain all the negative emotions of a certain aspect.
For example, if a cursed spirit is born from the fear of a certain volcano, then, that cursed spirit will contain all the negative emotions about that volcano, this includes fear, worry, or any other emotion.
As for Jujutsu sorcerers, they are humans born with the innate ability to use cursed techniques and manipulate cursed energy.
This profession is mostly hereditary but there are of course exceptions with normal people becoming sorcerers.
This happens very early on as sorcerers are either born with or naturally develop their cursed techniques at the age of 4 or 5 years old.
Of course, it may be possible to teach a normal human to become a jujutsu sorcerer as even they can be taught how to manipulate cursed energy, it's just that their talent may not be up to par with those with innate strength and abilities.
But what does all of this have to do with the world's plan?
Well... Everything!
Pitting those two opposing sides against each other, a 'ritual' of sorts is set allowing the 'creation' of Positive Energy following the death of either human sorcerers or cursed spirits in battle.
When that happens, their 'Negative' energy turns 'Positive' and then gets absorbed by the world further strengthening it.
But this poses a bigger question.
What does killing each other has to do with transforming Negative Energy into Positive Energy?
This actually has something to do with the nature of Cursed Energy itself!
It is a well-established fact in this world that Cursed Energy (Negative Energy) can turn into Positive Energy by simply taking two sources of cursed energy and 'multiplying' them with one other.
As a result, the energy that destroys becomes energy that creates, and negative energy becomes positive.
This is known as [Reverse Cursed Technique].
It's just that despite sounding easy, this is something very hard and complex to do for most jujutsu sorcerers.
Jujutsu sorcerers use this technique for various purposes but most commonly for healing.
Cursed energy comes from negative emotions, which are unfit for healing living things which is contrary to cursed spirits that are made up of cursed energy and don't require a reverse cursed technique to heal.
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Cursed spirits are vulnerable to reverse cursed energy as the positive energy can compromise the integrity of their cursed energy-based bodies.
When reverse cursed energy is blasted directly into a curse, it compromises its body structure and causes them to disintegrate.
But things don't end here as when this positive energy is used to power a Cursed Technique, the effects of said technique get reversed.
For example, if a technique's ability is to "pull a target" if used with positive energy powering it then its ability will become "pushing a target".
From this alone one can see that this energy is literally the polar opposite of cursed energy.
Moreover, this Positive Energy is something that the [World] 'likes' and is willing to absorb as it won't have any adverse effects on it.
But there is just a little issue with that, and it's that all of this is temporary as after the jujutsu sorcerer stops manipulating it, it reverts back to normal negative cursed energy.
So what did the world do about it?
Just a simple equation!
- -
Cursed Spirit = Negative Energy
Jujutsu Sorcerer = Negative Energy
Negative Energy x Negative Energy = Positive Energy
Conclusion:
Cursed Spirit x Jujutsu Sorcerer = Positive Energy!
- -
And that is exactly what the world did, it simply allowed cursed spirits and jujutsu sorcerers to fight and kill each other and all it has to do is just absorb energy in peace!
Moreover, different from the temporary transformation made thanks to the manipulation of sorcerers, this transformation after death is permanent and comprehensive fully transforming the Negative energy into absorbable Positive energy for the world.
This would also explain the reason why each generation of cursed spirits and human sorcerers is stronger than the last one!
This is mainly caused by the Increase of Negative Energy thanks to modern society and the growth of the world itself pushing for the growth of its creatures.
This has been happening since ancient times with each generation growing stronger and stronger just to then 'feed' the world with their death.
Actually, The only thing the world has been doing is actually keeping a 'balance' of sorts between sorcerers and cursed spirits not allowing any of them to overwhelm the other party.
But it just seems that this balance is still somewhat in favor of humans with the world still preferring them over cursed spirits.
This could be seen from the 'Limitation' that the world has set on the birth of Cursed Spirits.
Indeed, a Limitation!
After reaching this world and seriously analyzing the power system for the first time, Lorien has always felt a bit weird as the curse spirits aren't as strong as they theoretically should be.
Negative emotions are everywhere, especially fear!
Technically, there should be some very strong cursed spirits born from the fears of war, famine, aging, time, and most importantly, the unknown.
But as far as Lorien could tell, none of those cursed spirits exist.
And not only that! all the current cursed spirits are born from limited fear in a limited range.
For example, you can find a cursed spirit born from the fear of a specific volcano, but you can't find a cursed spirit born from the fear of all volcanos in the world or one born from the fear and worry about climate change.
Even the strongest cursed spirits are just those born from myths or certain concepts in a limited range.
It is as if something is restricting their birth and not allowing the inception of super-strong creatures.
And not only that! it is also pushing for the birth of strong humans with Satoru Gojo being a prime example.
It's just that this may change soon enough, after all, now that there are a lot of cursed spirits, it is time for 'harvest'.
And what better way is there other than a war between Cursed Spirits and Jujutsu Sorcerers?
Thinking of this, Lorien's eyes narrowed slightly as even without using his power he could tell what was going to happen.
'War is coming, The balance will soon be broken...'