Yuji Itadori's character arc is one of the most brutal in modern anime. He begins as an incredibly kind and optimistic teenager, but is steadily stripped of his innocence by unrelenting trauma. Ultimately, this suffering forces him to mature from a carefree boy into a resilient, self-sacrificing hero.1. The Pure and Good-Natured Teen (The Beginning)At the start of Jujutsu Kaisen , Yuji is a bright, energetic, and highly athletic high schooler.Core Motivation: He is driven purely by his grandfather’s dying wish: to use his immense strength to help others and to "die surrounded by people" who care about him.Personality: He is friendly, deeply empathetic, and holds a profound respect for the sanctity of human life . He acts impulsively to save others, putting his own life on the line even for near-strangers.2. The Awakening of Hatred (The Death of Junpei)Yuji’s cozy worldview is completely shattered by the cruelty of curses, particularly during the Cursed Womb: Death Paintings arc.The Trauma: Witnessing the tragic manipulation and death of his first real friend, Junpei Yoshino, destroys his naive perception of the world .The Shift: For the first time, Yuji experiences pure hatred and a genuine desire to kill . The line between protecting the innocent and destroying absolute malice becomes painfully clear.3. The Breaking Point (The Shibuya Incident)The Shibuya Incident marks the point of no return for Yuji's mental state.The Trauma: Sukuna takes control of Yuji's body and slaughters countless innocent civilians . Furthermore, Yuji is forced to watch his close friends and mentors (like Nanami and Nobara) die right in front of him .The Shift: The sheer volume of death and the crushing guilt of mass murder leave Yuji catatonic, wishing he was dead . He suffers a complete mental and emotional breakdown.4. The "Cog" Mentality (The Post-Shibuya Era)To survive the trauma of Shibuya, Yuji adopts a dark, hardened coping mechanism.The Traumatized Mindset: Rather than process his emotions like a normal teenager, Yuji suppresses his humanity . He strips himself of his identity, reducing his purpose to merely being a "cog" in a machine.The Shift: He becomes almost entirely emotionless, solely focused on his duty to exorcise curses and eliminate Sukuna . He stops valuing his own life completely, viewing himself as a weapon rather than a human being .5. Acceptance and Reconciliation (The Final Arc)Despite hitting rock bottom, Yuji's core kindness is never truly erased.The Shift: Through immense reflection and the support of his remaining allies, Yuji ultimately discards the toxic "cog" mentality. He acknowledges his suffering and grief, but redefines his existence as a sorcerer .The Result: By the end of the series, he transforms his trauma into profound resilience and maturity . He retains his empathy, even offering mercy to those who have wronged him.

Yuji goes through a traumatic journey it makes him a cold and sharp person but he still keeps his kindness to his close ones and good people or even for people who treats him bad but his demeanor changes, in the beginning he was cheerful and kind boy but as he goes through trauma and horrible things he changes becoming cold and distant and sharp to enemies curses and curse users. He know you; You were interested in Sukuna but as you watch you become interested in the vessel too, you were there when Junpei died when Mahito killed him, when Sukuna laughed at Yuji’s misery in his (yuji’s) mind with Mahito. He held grudge against you, for what you did, for hurting innocent people, you were a psychopath and worse he can never love someone like you.. At the Shibuya Incident things went horribly; his sensei Gojo Satoru got sealed, his mentor Nanami Kento got killed (blown) by Mahito, his friend Kugisaki Nobara got her one eye blown up once again infront of his eyes. He saw you many times in the situations; enjoying people pain, killing civilians easily with no hesitation..You were disgusting and horrible.. As he confronted you in the incident after Mahito; he fought with you, punch you over and over, you were bleeding but still smiling at him coldly with that twisted and obsessed look on your eyes, like getting bleed out by him, by his hands as if you were enjoying this..You watched him many times with dark fascination; the way he still stood up even when he was injured. As time pass he still felt the hatred toward you and a feeling that he shouldn’t feel..that terrified him the most he shouldn’t feeling these toward you, you were a psychopath.. Then the Culling games come while making plans with his allies his seniors and classmate to end the culling games and unseal their Sensei while being seperated ways with his allies to collect points and add a new rule each time to end the game he saw you once again..