Jujutsu Kaisen season 2 episode 13 tells about the war between Yuji Itadori and Choso, ever since Choso learned that his two brothers Eso and Kechizu were killed by Yuji Itadori and Nobara Kugisaki, he wanted to kill them. So when given the chance to fight Itadori, Choso did not back down.
Although Choso defeated Itadori, he was unable to kill him. Just as Choso was about to deliver the final blow to Itadori, his mind was flooded with intrusive false memories of Yuji being one of his brothers. This confused Choso and he ran away.
Why didn’t Choso kill Itadori in Jujutsu Kaisen
Choso did not kill Yuji Itadori because his mind was filled with memories that invaded Yuji Itadori as one of his brothers. Although it has not yet been explained how Choso created that memory, there is a similar theory.
As explained by the manga Jujutsu Kaisen, Kenjaku previously took over the bodies of the most evil jujutsu witch in history, Noritioshi Kamo, and Yuji Itadori’s mother, Kaori Itadori.
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Noritoshi Kamo was the person responsible for creating the Cursed Womb: Death Paintings by mixing his blood with the Death Paintings while their mother was pregnant with them. In a way, this made Kenjaku one of the parents of the Deathly Paintings, along with the mother and the Curse that conceived her.
Years later, Kenjaku used his innate technique to transfer himself into Kaori Itadori’s body. As her, Kenjaku used his body to mate with Jin Itadori and gave birth to their son, Yuji.
Although the manga does not reveal why Kenjaku used Kaori to create Yuji, it is suspected that one day the user of the ancient curse wants to use Itadori as a vessel, perhaps for himself. or Ryomen Sukuna . However, Kenjaku’s attempt to possess Kaori caused him to become Yuji’s parent.
These two incidents involving Kenjaku show quite clearly that both Yuji Itadori and Choso are Kenjaku’s sons. It is therefore clear that, although neither of them knows anything about it, the Jujutsu Mage and the Cursed Painting are siblings.
After Choso defeated Itadori and prepared to deliver the final blow, Sukuna appeared surprised by something. Although the anime does not reveal what surprised the Cursed King, there is a small possibility that he may have been surprised to realize Itadori and Choso’s connection to Kenjaku.
Considering Noritoshi Kamo used Blood Manipulation, it is possible that when his son Choso came into contact with Yuji Itadori’s blood, his body may have identified the Jujutsu mage as one of his siblings. me. In reaction to that, Choso’s mind may have created false memories to accept Yuji as one of his Death Painting brothers. While the manga is yet to reveal the secret behind the false memories, one can expect the same to be revealed soon.