Ryomen Sukuna: The conscience-less predator who plays with his food

Ryomen Sukuna, the "King of Curses" in Jujutsu Kaisen, is a millennia-old predator who crosses the centuries without ever changing at his core: he kills with elegance, humiliates with a smile, and contemplates the suffering of others with the idle curiosity of someone watching an anthill burn. There is no fury in his cruelty, no old wound to avenge; there is something colder and harder to face head-on: the absence of what, in the rest of us, restrains harm. To read him with real criminology, it's worth resisting the easy word —"monster"— and using a precise tool: psychopathy as Robert Hare described it, not as an insult but as a pattern of traits that can be measured, recognized and—this is the uncomfortable part—understood without thereby being excused.

// The theoryPsychopathy is not a monster: it's a pattern

Hare's contribution was to turn a fuzzy intuition into a clinical instrument: the PCL-R (Psychopathy Checklist-Revised), which assesses traits such as superficial charm, egocentric grandiosity, pathological manipulation, predatory impulsivity and, at the core, the absence of empathy and remorse. The conceptual key is that psychopathy is not equivalent to violence or madness: there are psychopaths who never break the law and function in offices, and there are violent criminals who are not psychopaths. It's a trait distributed across the population, not a moral label. The psychopath isn't confused about what he's doing: he knows perfectly well he's causing harm; the harm to others simply doesn't weigh on him. The emotional brake fails, not the knowledge. That's why Hare insists on distinguishing psychopathy—a description of a way of functioning—from moral judgment—what that functioning does in the world. Sukuna is useful for thinking through the theory because he displays the picture almost by the book: he seduces when it suits him, manipulates effortlessly, knows himself superior to everything, and watches others die without a single emotional muscle contracting.

// The subjectThe hedonist who knows no remorse

A handful of scenes covers Hare's portrait. In episode 5 of the anime ("Curse Womb Must Die -II-"), after leaving the juvenile detention center, Sukuna takes over Yuji's body, swallows the finger held by the special grade curse and rips out the boy's heart: a hostage, because if Yuji takes back control without a heart, he dies. Then, inside Yuji, he offers to revive him in exchange for a binding vow whose terms Yuji must forget: when Sukuna says "Enchain", he gets a minute of control during which he cannot harm anyone. It is manipulation in its purest form, a contract the victim does not remember signing, and in the final arc he uses it to tear off one of Yuji's fingers, arguing that the vow never covered hurting Yuji himself, and move into Megumi's body. There comes the cruelest scene: he kills Yorozu, who occupies the body of Tsumiki, Megumi's sister, to break Megumi's soul for good. And in the Shibuya Incident, amid fighting that razes much of the ward, the only thing that draws something like respect from him is Jogo's strength, which he praises as Jogo dies. Where other villains have a wound or a cause, Sukuna offers a smooth void: no empathy and no remorse, only his own pleasure and a verdict on who is worth fighting. A being fully lucid, charming when he wants to be, and utterly indifferent to the value of any life that is not his own.

// The crackThe how does not erase the what

Here is the ethical crack of KRIMINIS, and with psychopathy it's sharper than ever. Naming the trait —"he's a psychopath"— can slide into two opposite errors. The first is exculpatory determinism: "if he was born without empathy, he's guilty of nothing, he's a broken machine." The second is demonization: "he's pure evil, there's nothing to understand." Both, curiously, close the conversation. The honest reading holds both truths at once: psychopathy explains the how—why Sukuna harms coldly, without the brake that stops others—but doesn't touch the what—what he does is still destruction, and it's still his. The absence of remorse describes his inner machinery; it doesn't cancel responsibility for the acts that machinery produces.

Real criminology works with this tension daily: courts recognize that a personality trait can modulate the understanding of a crime without abolishing accountability. A psychopath knows that killing is forbidden and chooses to do it; his deficit is affective, not cognitive. That's why Hare himself was so cautious about the forensic use of his scale: he feared it would become a label that sealed destinies or, conversely, an alibi. Sukuna, a fictional character, lets us rehearse that caution without real cost: to understand that his coldness has a clinical name and that this name doesn't redeem him from a single one of his victims.