Aux
JJK: jujutsu kaisen is a anime based on modern society exposed to monsters known as 'curse' with varying grades from 4,3,2,1 and special grade ( strongest).
To counter these monsters or rather curse, fighters who use the same energy as curses from humans were born. They were known to be existing from more than a thousand years ago as well which was the golden age of jujutsu sorcerery.
Special grade sorcerer:
There were only 4 known special grade sorcerer among sorcerer throught the world.
To be a special grade means to be able to destroy a small country by yourself can be set as a barrier of standard.
Gojo Satoro: Born from the gojo family which is one of the three great clans from a long time known for their ultimate cursed technique which proceeds all other. He is born with six eyes(not literally six eyes) which grants him find control and manipulation of the cursed energy as we call it. He's also born with the cursed technique which brings ' infinity to reality '. This is few of the technique which is creative and one of the unbeatable one throught any anime powering.
Geto Suguru: Best friend of gojo with the cursed technique 'Cursed Spirit Manipulation' as the name implies, Suguru's technique allows him to control cursed spirits. Dominated curses are absorbed into small black orbs that Suguru must ingest orally in order to use.
Yuki Tsukumo educated Suguru during a conversation with the information that non-sorcerers are the main reason curses are born. Cursed energy flows far more freely out of them compared to normal sorcerers. Yuki either wanted to eradicate cursed energy from all of humanity or teach everyone how to control it. This made Suguru come up with a third solution: killing all non-sorcerers.Suguru used his religious group as a lure to collect thousands of cursed spirits. Over the course of a decade, Suguru became a bigger threat to humanity than any curse at the time.
Yuta Okkotsu: The most recent person to enter the ranking of special grade. Being a far blood relative of gojo, he has more cursed energy then even gojo satorou who is the strongest sorcerer of the modern world. During his childhood, while seeing his childhood sweetheart die before him, he unconsciously manifested cursed energy in huge amount and made the girls soul into a curse due to grief of losing her. When he later on manifested 'rika' the girl turned to curse, he was immediately promoted to special grade due to the immense level of cursed energy Rika had which made the higher ups of the jujutsu world promote yuta instantly to special grade.While connected to Rika, Yuta can copy innate techniques and use them. He can even use multiple different techniques that he's copied in quick succession
Yuki Tsukumo: Yuki's innate technique allows her to grant virtual mass to herself and her shikigami. This allows her to use concepts of physics to defeat virtually anyone if she added imaginary mass to the point of blackhole. This made her one of the few people who could have destroyed a country or even affect the earth itself by unleashing this technique to it's maximum. However knowing the implication of her technique she never unleashed it into its full potential.
These were the 4 known special grades of the modern jujutsu society.
État de l’alimentation hebdomadaire
-- Classement
Power Stone 
-- Power
stone