Yuji Swallows Cursed Finger

Lore & Background

The finger was kept at Yuji's school, Sugisawa Third High School, as a talisman until the Occult Research Club came across it. When club member Setsuko Sasaki peels off its seal, Cursed Spirits are drawn to the finger and attack her and Takeshi Iguchi. By swallowing it, Yuji becomes Sukuna's host; Sukuna's power is divided among twenty fingers, and all of them would have to be consumed to restore him.

Reader's Guide

The chain reaction begins when Megumi Fushiguro is dispatched to retrieve a cursed object hidden at Sugisawa Third High School. He fights the curses drawn by the unsealed finger and is joined by Yuji, who is able to see them. The two are cornered. To save them, Yuji swallows the finger. Sukuna surfaces at once, but to Megumi's surprise Yuji keeps control of his body and suppresses him. The possession is temporary; Yuji manages to regain control, though he now shares his existence with the King. The aftermath brings Satoru Gojo, who intervenes before the Higher-Ups can order Yuji’s immediate execution. He recognizes the unprecedented potential of a stable vessel and proposes a reprieve: Yuji will consume all remaining fingers to become Sukuna's final meal, delaying the inevitable death sentence.

The Genesis of a Host

Yuji Itadori begins as an ordinary high schooler with exceptional physical strength until he swallows a cursed object hidden at his school: one of the preserved fingers of Ryomen Sukuna. When his friends accidentally unseal a rotten finger containing the ancient curse Ryomen Sukuna, Yuji makes the selfless choice to swallow the object himself to protect Megumi Fushiguro, a Jujutsu sorcerer tasked with its retrieval. This act inadvertently transforms him into the vessel for one of history's most malevolent entities.

The Jujutsu Society initially mandates his immediate execution alongside Sukuna; however, Satoru Gojo intervenes upon observing Yuji's unique ability to maintain control over his own body against the curse's influence. Instead of death, Yuji is enrolled at Tokyo Prefectural Jujutsu High School for training under a specific condition: he must consume all twenty of Sukuna's fingers before facing execution. This arrangement aims to ensure that Sukuna can be completely destroyed upon Yuji's eventual death, setting the stage for a perilous journey where a young boy must balance humanity with the soul of a King of Curses.

The Mechanics of Sorcery and Conflict

The world of Jujutsu Kaisen operates on the principle that negative emotions generate Cursed Energy, which accumulates to form malevolent spiritual entities known as Curses. These grotesque monsters often draw inspiration from traditional Japanese folklore, including vengeful spirits and ghosts, posing a constant threat to humanity. To combat this, specialized individuals called Jujutsu Sorcerers learn to control their internal energy flow, granting them inhuman abilities and minimizing passive leakage.

High-ranking practitioners can refine this power into unique Cursed Techniques or unleash Domain Expansions, creating pocket dimensions where their attacks are guaranteed to hit. The sorcerers operate under the secretive Jujutsu Society, a hierarchical organization led by the Commander and three major clans: Gojo, Zen'in, and Kamo. Despite its mission to protect non-sorcerers, the society faces internal criticism regarding its rigid adherence to tradition and the disproportionate power held by elite families.

This tension fuels the narrative as intelligent Cursed Spirits plot to dismantle the current order, specifically targeting Satoru Gojo, whose immense power maintains stability within the sorcerer world.