Kenjaku is not a villain. He is the story’s structural necessity. The Jujutsu Kaisen franchise has been building toward this exact point since Chapter 1, and it finally arrived when the Culling Game arc began.
Readers love to frame Kenjaku as the final boss. They call him the ultimate evil, the mastermind who orchestrated the entire disaster. That framing misses the actual mechanics of the narrative. Kenjaku does not exist to be defeated. He exists to force every character in Jujutsu Kaisen to make the same structural choice: whether to cling to individual morality or accept collective annihilation for the greater good. The story’s entire architecture pivots on that exact tension. Without Kenjaku as the engine, the series collapses into another shonen tournament arc with better choreography.
The Culling Game works because Kenjaku weaponizes the core philosophy of the series. Every sorcerer who enters the game assumes they can outsmart the rules. Every sorcerer who enters the game assumes they can survive if they just play harder. Kenjaku built a system that punishes exactly those assumptions. The game forces sorcerers to confront the single most uncomfortable truth in Jujutsu Kaisen: that survival requires complicity. You cannot win the game without becoming part of the mechanism that kills other players. The architecture of the Culling Game proves that the series has never been about fighting curses. It has always been about what happens when good people are forced to make impossible choices.
Kenjaku’s plan operates on three structural layers, and understanding those layers is the only way to read the final arc correctly.
Layer one: The body as a vessel. Kenjaku’s entire existence is parasitic. He has lived for centuries by transferring his consciousness into different hosts. This is not a gimmick. It is the physical manifestation of his philosophy. A sorcerer’s body is a temporary container. Individual identity is irrelevant. The technique is permanent. The body is disposable. Every character who clings to their personal identity throughout the series is fighting a losing battle against Kenjaku’s actual thesis. Yuji Itadori’s entire arc is a direct rebuttal to Kenjaku’s philosophy, and the series knows it. That is why Yuji’s refusal to accept Kenjaku’s worldview is the structural counterweight to the entire Culling Game. Without Yuji’s insistence on individual humanity, the story has no moral center. With it, the story has a living argument against Kenjaku’s entire worldview.
Layer two: The game as a filter. The Culling Game is not a tournament. It is a stress test. Kenjaku designed the game to identify which sorcerers would survive the upcoming catastrophe, and which would not. The game forces players to make the exact choices that determine whether humanity endures or collapses. Every battle in the game is a philosophical argument played out through violence. Sukuna’s presence inside Yuji is the ultimate expression of Kenjaku’s philosophy: power without morality. Yuji’s presence is the counter-argument: power bound by conscience. The game forces every player to choose which version of themselves they will become. That is why the Culling Game divides readers so sharply. Some readers root for the ruthless players. Some readers root for the moral players. The series is not asking which side is correct. It is asking whether the series can survive the weight of its own philosophy.
Layer three: The merger as inevitability. Kenjaku’s final goal is to merge with Sukuna and create a being capable of ending the current era of jujutsu society. This is not a power fantasy. It is a structural necessity. The series has been building toward this exact moment since the very first chapter. The merger represents the collision of two opposing philosophies: Kenjaku’s utilitarian calculus and Sukuna’s absolute individualism. The result is neither. The merger produces something entirely new, and that is why the final arc is so structurally important. The series is no longer about good versus evil. It is about what happens when two incompatible worldviews collide and destroy each other in the process.
Kenjaku’s true role in Jujutsu Kaisen becomes clear when you compare him to Light Yagami from Death Note. Both characters believe they are solving a broken system. Both characters believe their methods justify their ends. Both characters believe they are the only ones capable of making the necessary choices. Light Yagami kills criminals to create a crime-free world. Kenjaku destroys sorcerers to create a new era. Light believes his death penalty is justice. Kenjaku believes his merger is evolution. The structural parallel is exact. Both characters force every other character in their respective series to confront the same uncomfortable question: is it possible to save the world by destroying it?
Light Yagami’s story ends with his death. Kenjaku’s story ends with his merger. Light loses because he believes he can control the outcome. Kenjaku wins because he understands he cannot. That is the crucial difference. Light Yagami is a character study about rationalized villainy. Kenjaku is a structural device about the limits of rationality. Light believes he is the hero. Kenjaku knows he is the villain. Light thinks he can fix the system. Kenjaku knows he has to break it. The comparison is not about morality. It is about structure.
Readers who treat Kenjaku as a simple antagonist miss the entire point of the Culling Game arc. The arc is not about defeating Kenjaku. It is about surviving him. It is about what happens when a character who believes in individual morality is forced to play a game designed by someone who believes in collective survival. The tension between those two worldviews is the entire story. Without that tension, Jujutsu Kaisen is just another shonen series with better fight scenes. With it, Jujutsu Kaisen is a structural argument about the cost of survival.
The final arc of Jujutsu Kaisen works because Kenjaku is the story’s structural necessity. He forces every character to make the same choice. He forces the series to confront its own philosophy. He forces readers to decide whether they believe the story’s answer is worth the cost. That is why the Culling Game arc is the most important arc in the series. That is why Kenjaku is the true successor to Light Yagami. That is why Jujutsu Kaisen works as a story about the limits of morality.
