Jujutsu Kaisen has teased a deeper connection between Yuji and Sukuna from the very beginning.
Not only can the protagonist become the vessel of an ancient sorcerer without losing himself, they also share some traits. But it wasn't until chapter 257 of Jujutsu Kaisen that we got official confirmation.
This chapter reveals that Sukuna “ate” his twin brother while he was still in his mother's womb. The spirit of the dead fetus was later reincarnated as Jin Itadori, Yuji's father. This means that Sukuna is Yuji's uncle, in a way.
But this revelation doesn't add any emotional angle to their fight. Sukuna deserved what he got from Yuji, after causing so much chaos and carnage.
However, if you think deeply enough, Jujutsu Kaisen fans will realize that Yuji was not only fighting his uncle during this time, but also his father.
Although never explicitly stated, Sukuna's four arms and two mouths may have been the result of him eating his own brother. After eating the child, Sukuna's body merged with his twin brother's. This means that it was his father's body that caused Yuji so much pain and suffering.
Yuji vs Sukuna in Jujutsu Kaisen
It's a somber detail that makes the final battle of the Shinjuku Showdown arc a heartbreaking ordeal. Jujutsu Kaisen fans are also fascinated by this line of reasoning. As one person put it: “Identical twins share the same DNA, so biologically, Yuji is Sukuna's son.”
“It goes a little deeper than that. The twins in JJK are considered to be of the same soul. Spiritually, Sukuna can be considered Yuji's father. The sad thing here is that Itadori has been constantly attacking the body parts that should have belonged to his father.”another added.
Someone else said: “What's even sadder is that Jin is said to have cherished Itadori very much, having been anticipating Itadori's birth for quite some time, even at the cost of turning a blind eye to his apparently suspicious and presumed dead wife.”
While the reader is able to see the tragedy of the war, Yuji knows nothing about his true relationship with Sukuna, or even his real parents.
But since Jujutsu Kaisen has three more chapters before the end, maybe Yuji will know the truth before the end.
