Jujutsu Kaisen Season 1: The Show That Hit the Ground Running and Never Slowed Down
Some anime ease you into their world. They take a couple of episodes to establish atmosphere, introduce characters slowly, let you find your footing. Jujutsu Kaisen does not do this. By the end of episode one, a high school student has eaten a finger belonging to the King of Curses, become his vessel, been told he will be executed by the secret organization of sorcerers who govern his new reality, and has been given a specific timeline on that execution contingent on him first consuming all twenty of the demon's preserved fingers. The show looks you in the eye, says "keep up," and starts running.
And you keep up. Because Jujutsu Kaisen is one of the most confidently constructed debut seasons in modern shonen anime. The fights are extraordinary. The characters are fully realized from their first appearances. The villain — Mahito — is one of the genuinely unsettling antagonists the genre has produced. And underneath all the spectacular violence, there is a question the show keeps returning to with real honesty: what does it mean to live in a world where death comes for everyone, often cruelly, and often for people who did not deserve it?
This is the complete guide to Jujutsu Kaisen Season 1. Every arc, every character, every theme. Let us go.
Introduction — Production and Release Details
Jujutsu Kaisen Season 1 is based on the manga series written and illustrated by Gege Akutami, serialized in Shueisha's Weekly Shōnen Jump from March 2018. The anime adaptation was produced by Studio MAPPA and directed by Sunghoo Park. Hiroshi Seko wrote the scripts, Tadashi Hiramatsu designed the characters, and the music was composed by Hiroaki Tsutsumi, Yoshimasa Terui, and Alisa Okehazama — a three-person composition team that gives the soundtrack its distinctive layered quality.
The season had an advanced streaming debut on YouTube and Twitter on September 19, 2020, before its official television premiere on October 3, 2020 on MBS and TBS's Super Animeism programming block. It ran for 24 episodes, concluding on March 27, 2021. It adapts chapters 1 through 63 of the manga, covering volumes 1 through 8.
The season runs in two cours. The first cour (episodes 1–13) uses the opening theme "Kaikai Kitan" by Eve and ending theme "Lost in Paradise" by ALI featuring Aklo. The second cour (episodes 14–24) switches to opening theme "Vivid Vice" by Who-ya Extended and ending theme "Give It Back" by Cö shu Nie. "Kaikai Kitan" is one of the most iconic anime openings of the 2020s — its music video on YouTube reached 100 million views in April 2021, among the fastest any anime opening had ever achieved that milestone. "Lost in Paradise" won Best Ending Sequence at the 5th Crunchyroll Anime Awards.
From episode 3 onward, the series includes post-credits shorts titled "Juju Sanpo" (Jujutsu Stroll) — brief comedic vignettes featuring the main characters in everyday situations, providing tonal contrast to the main story's darkness and giving the characters room to be funny and human between the battles. They are consistently delightful.
Crunchyroll licensed the series for international streaming and launched an English dub in November 2020. The dub cast — Adam McArthur as Yuji Itadori, Robbie Daymond as Megumi Fushiguro, Allegra Clark as Nobara Kugisaki, and Kaiji Tang as Satoru Gojo — is excellent. In Japan, the Blu-ray Volume 1 sold 22,701 units in its first week, ranking number one on Oricon's anime sales chart. Internationally, Jujutsu Kaisen was the second most-watched anime on Crunchyroll in 2020, behind only Black Clover, being watched in 71 countries and territories despite having only aired for part of the year.
At the 5th Crunchyroll Anime Awards, Season 1 won Anime of the Year. Ryomen Sukuna won Best Antagonist. The show was also nominated for Best Animation. In 2024, Jujutsu Kaisen was named by the Guinness World Records as the most in-demand animated TV show globally, with a demand rating 71.2 times the average TV show. A film prequel — Jujutsu Kaisen 0 — was released in Japan on December 24, 2021. Season 2 ran from July to December 2023. Season 3, covering the Culling Game arc, premiered on January 9, 2026 with a one-hour special and concluded March 27, 2026. A Season 4 was announced immediately following its finale.
The World — Understanding Jujutsu Society Before the Story
The world of Jujutsu Kaisen operates on a specific premise: negative human emotions — grief, hatred, regret, fear — accumulate into physical entities called Cursed Spirits. These spirits exist alongside ordinary humans, invisible to most people, and they cause injury, madness, and death. The stronger the negative emotions that generated a spirit, the more powerful and dangerous it becomes.
Opposing them is a secret society of Jujutsu Sorcerers — people born with the ability to generate and manipulate Cursed Energy, the power that makes it possible to perceive, fight, and exorcise Cursed Spirits. Sorcerers are organized hierarchically by grade — Grade 4 being the weakest and Special Grade being the most powerful — and are trained at two institutions: Tokyo Jujutsu High and Kyoto Jujutsu High.
Above both schools is the Jujutsu Higher-Ups — the conservative, bureaucratic governing body of jujutsu society that makes decisions about execution orders, resource allocation, and official policy. They are functionally the villain of the institutional landscape: more concerned with maintaining the existing order than with protecting people, and deeply suspicious of anything that challenges their control. They will become increasingly antagonistic as the franchise develops.
Sorcerers can develop personal abilities called Cursed Techniques — unique powers derived from their specific cursed energy constitution. The most powerful expression of a Cursed Technique is a Domain Expansion: a spell that creates a bounded, self-contained reality where the sorcerer's technique is applied to everything inside automatically and cannot be avoided. Domain Expansions are rare, enormously powerful, and dangerous to use because of the energy they require.
At the center of the story is Ryomen Sukuna — the King of Curses. A legendary cursed spirit of incomprehensible power who lived during the height of the Heian era. When he was eventually defeated, his body could not be fully destroyed — it was divided into twenty fingers, each preserved as a cursed object of Special Grade rating. These fingers are scattered across Japan, and cursed spirits are drawn to them. Anyone who consumes a finger absorbs a fragment of Sukuna's power — along with a fragment of Sukuna himself.
Story — Arc by Arc, Every Detail
Arc 1: Introduction / Fearsome Womb Arc (Episodes 1–6)
We meet Yuji Itadori — a seventeen-year-old high school student in Sendai with two immediately visible qualities: extraordinary physical strength and a warm, genuine personality that makes people trust him instantly. He is on the occult research club's membership rolls purely because he likes the club members, not because he has any particular interest in the supernatural. He visits his dying grandfather in the hospital every day, which tells you everything you need to know about what Yuji values.
His grandfather's final words are simple and serious: die surrounded by people, and help others. He passes quietly. Yuji is left with those words and a grief he carries forward.
The same night, Yuji's occult club friends have accidentally unsealed a cursed finger — one of Ryomen Sukuna's twenty preserved digits — that was stored in their school. This has attracted Cursed Spirits to the building. Megumi Fushiguro, a first-year at Tokyo Jujutsu High who uses a technique called Ten Shadows that summons shikigami — spirit animals made from his shadow — has been tracking the finger and arrives at the school to retrieve it before it falls into the wrong hands. Too late. The spirits are already there. Megumi's shikigami are powerful but not enough to handle the level of threat.
Yuji, who cannot see the spirits but can feel that his friends are in danger, arrives. He has no cursed energy. He has no training. He has the physical strength of someone who could arm-wrestle a car and the instinct to run toward danger rather than away from it. He recovers the finger. He is cornered. The spirits are going to kill everyone. Yuji eats the finger.
Sukuna takes over his body. The Cursed Spirits are immediately obliterated — the King of Curses is not interested in letting lesser creatures touch his vessel. Megumi nearly dies trying to force Sukuna back. Sukuna, amused by the situation rather than angry, retreats. Yuji regains control. The immediate crisis is over.
The next morning, Satoru Gojo arrives. He is tall, white-haired, wearing a blindfold, and radiating the particular energy of someone who knows exactly how capable they are and has decided to be delighted about it rather than dignified. He is a teacher at Tokyo Jujutsu High and, as will become immediately clear, the single most powerful jujutsu sorcerer alive. He explains the situation to Yuji: the Higher-Ups have decided he should be executed, because a vessel for Sukuna is inherently dangerous. Gojo proposes an alternative: let Yuji consume all twenty fingers, collecting all of Sukuna's power into one place, and then execute him — simultaneously neutralizing Sukuna forever. The Higher-Ups grudgingly agree. Yuji's execution is postponed. He is enrolled at Tokyo Jujutsu High.
Yuji meets the school's principal, Masamichi Yaga — a man who builds and operates cursed corpse puppets and whose initial interview with Yuji consists of being attacked by one. Yuji's response — refusing to fight back because he understands the doll is not actually trying to kill him — passes whatever test Yaga was administering. He is admitted.
He meets the third member of the first-year class: Nobara Kugisaki, who arrives from rural Iwate with exactly zero patience for condescension and a Straw Doll Technique — driving nails into a cursed doll to transmit damage to any target she has biological material from, like hair or blood — that is as clever as it is dangerous. Their first mission together, cleaning curses from an abandoned building in Roppongi, establishes the dynamic immediately: Nobara takes charge of splitting up, gets herself into a difficult situation, and handles it with the specific confidence of someone who has decided competence is more interesting than caution.
The arc's main event is a mission at a juvenile detention center that has been overrun with cursed spirits. A Special Grade cursed womb — a being of enormous and unpredictable power — has appeared inside, drawn to one of Sukuna's fingers that is contained within. Yuji, Megumi, and a sorcerer supervisor named Ijichi are sent to investigate and rescue any survivors.
Inside the center, the cursed womb hatches. It is a Finger Bearer — a monstrously powerful cursed spirit that should require Grade 1 sorcerers or higher to handle. The first-years are Grade 4 at best. The situation deteriorates rapidly. Megumi is overwhelmed. Yuji is overwhelmed. Sukuna, who exists within Yuji's body and is watching all of this with something like interest, recognizes an opportunity. He forces Yuji's body to take an unsurvivable hit, effectively killing Yuji in that moment. With Yuji dead, Sukuna can take control.
Sukuna fights the Finger Bearer for his own reasons, not to save anyone. He annihilates it effortlessly. He has twenty seconds of freedom before Yuji can reclaim his body. He uses them as he pleases — injuring Megumi severely, demonstrating his power, and then agreeing to a deal: he will heal Yuji from the death that should be permanent if Yuji agrees to a binding vow. He does not tell Yuji the terms of the vow when Yuji agrees. This will matter enormously later. Yuji is restored. The mission is technically completed. Megumi and Yuji have survived something that should have killed both of them.
The arc closes with a scene that Season 1 will return to: four figures in an ordinary café. One of them appears to be Suguru Geto — a sorcerer who was expelled from jujutsu society and is officially classified as a curse user — alongside three Special Grade Cursed Spirits. They planted the finger. They organized the incident. They are planning something, and their plan has two requirements: immobilize Satoru Gojo, and make an ally of Sukuna. Yuji's survival has complicated their calculations, but Geto — or the person wearing Geto's face — remains calm. He is not sure Yuji is actually dead. He is correct.
Arc 2: Vs. Mahito Arc (Episodes 7–13)
Yuji is officially reported as dead. The Higher-Ups believe the Finger Bearer killed him. Gojo is training him in secret. Megumi and Nobara, who genuinely believe their friend is gone, are grieving and training harder than before — for him, in his memory.
Gojo's training method is unconventional. He forces Yuji to watch movies while simultaneously maintaining control of his cursed energy flow — emotional regulation under cognitive load. The logic: cursed energy is generated and channeled through emotion. If Yuji can manage complex emotional input without losing control, he can manage his energy in combat. It works, eventually, though Yuji finds the movie-watching approach baffling.
Meanwhile, in a city movie theater, three young men are found dead. Their bodies are grotesquely transformed — shaped into something inhuman. This is not the work of a standard Cursed Spirit. It is the work of something that can reshape human bodies themselves.
Kento Nanami is assigned to the investigation. He is a former salaryman who returned to jujutsu work after deciding the corporate world was not worth his time, and he carries himself accordingly — precise, professional, emotionally contained, deeply competent. He does not like Gojo, specifically because Gojo is everything Nanami is not in terms of personality. But he is a Grade 1 sorcerer and one of the most functionally reliable people in jujutsu society. Gojo assigns Yuji, still officially dead, to work with him undercover.
Through a witness at the movie theater — Junpei Yoshino, a bullied teenager who was at the theater on the night of the murders — the investigation connects to a Cursed Spirit who has been operating in the area. Junpei knows the spirit. Has been spending time with him, actually. The spirit, who presents himself as philosophical, curious, and genuinely interested in Junpei's perspective on human cruelty, has been systematically grooming him.
That spirit is Mahito. His technique is Idle Transfiguration — the ability to reshape souls at will. By touching a person's soul directly, he can transform their physical form into anything he chooses: a weapon, a distortion, a dead thing in a living shape. He is the curse born from humanity's hatred of one another, and he is genuinely, uncomplicatedly delighted by his own existence. He finds human suffering fascinating rather than troubling. He experiments on humans the way a child might experiment on insects — with curiosity and without cruelty in any emotional sense, which is its own form of horror.
Mahito uses Junpei. He finds the boy's pain and isolation useful — a person that hurt is easy to manipulate, easy to point at targets, easy to fill with the specific kind of resentment that Mahito feeds on. He teaches Junpei a basic curse technique derived from Mahito's own power. He builds trust with him carefully. And then, when Yuji gets close to Junpei through genuine friendship — when there is a real possibility that Junpei might turn away from Mahito and toward something better — Mahito uses Idle Transfiguration on Junpei. In front of Yuji. He transforms the boy Yuji just made a friend of into a dying, grotesque shape, and then watches Yuji's reaction with pure interest.
Yuji tries to use Sukuna's power to save Junpei. Sukuna refuses. Junpei dies. This is the scene. The one that defines everything about what kind of show Jujutsu Kaisen is and what it costs to exist in this world. Yuji screams at Sukuna. Sukuna is entirely uninterested. And Mahito stands watching, cataloguing Yuji's grief, noting it for future reference.
Yuji and Nanami fight Mahito. The fight is spectacular and also functionally a loss — Mahito is not defeated, merely driven off. His soul-based technique makes him nearly impossible to kill with conventional attacks because damage to the body does not damage the soul. Only Yuji, who has Sukuna within him and whose fists can therefore reach the soul directly, can damage Mahito in a meaningful way. This is why Mahito finds Yuji specifically interesting. They are natural enemies in a philosophical sense as much as a physical one. Mahito is the product of human hatred. Yuji fights to prevent exactly the kind of suffering that produces such hatred. Every time they meet, the question underneath the fight is the same: what is a human being, and does that status carry any inherent value?
The arc ends with Mahito retreating and regrouping with Geto and the other Special Grade curses. They have what they came for. The planning continues.
And then Yuji is revealed to be alive at Jujutsu High. Nobara's immediate reaction — furious, screaming, clearly overwhelmed with relief — is one of the best character moments of the season. Megumi says less but his visible emotion says more. The trio is reunited. The Kyoto Goodwill Event is approaching.
Arc 3: Kyoto Goodwill Event Arc (Episodes 14–21)
The Kyoto Sister School Exchange Event is an annual competition between Tokyo Jujutsu High and Kyoto Jujutsu High — a collaborative exercise where students from both schools demonstrate their abilities in structured scenarios. The official framing is educational and cooperative. The reality is considerably more interesting.
The Kyoto school's principal, Yoshinobu Gakuganji — a conservative man of the Higher-Ups' disposition — has given his students a different instruction: kill Yuji Itadori. His reasoning is institutional: Yuji as Sukuna's vessel is an existential threat, and the Higher-Ups want him dead regardless of Gojo's plans. The Kyoto students are being asked to commit murder at a school event while making it look like an accident. Most of them follow the instruction with varying degrees of enthusiasm. One does not.
Aoi Todo is the Kyoto school's strongest student — an enormous, physically overwhelming third-year who has exactly one qualifying question for anyone he meets: "What kind of girl do you like?" This is not small talk. Todo evaluates people entirely on the basis of their answer, and his system for doing so is completely internal and non-transferable. When he asks Megumi and gets a boring answer, he beats Megumi half to death. When he asks Yuji and gets a genuine answer — the same answer Todo would give himself — he instantly considers Yuji his closest brother and refuses to participate in his assassination regardless of what Gakuganji ordered.
Todo is one of Season 1's great characters precisely because the show plays him completely straight. He is an enormous man with a deeply idiosyncratic worldview, and his worldview is internally consistent and sincere. His combat ability — the Boogie Woogie technique, which allows him to swap the position of any two people or objects he claps at, at the speed of a clap — becomes a devastating combination tool when paired with a partner who understands what he is doing. His training of Yuji in Black Flash during this arc is one of the season's most important skill development sequences.
The Kyoto students include: Mai Zenin, the twin sister of Maki Zenin who fights with a revolver loaded with cursed energy bullets; Kasumi Miwa, a sword user from a poor family who became a sorcerer to support them financially; Kokichi Muta, the student known as Mechamaru who operates remotely through a cursed puppet because his actual body is devastatingly fragile; and Noritoshi Kamo, a boy from a prestigious family who practices Blood Manipulation and carries the weight of his bloodline's reputation.
The Tokyo students — Yuji, Megumi, Nobara — compete alongside the second-years: Maki Zenin, Mai's twin and a sorcerer with essentially no cursed energy who compensates with physical ability and cursed tools; Toge Inumaki, whose Cursed Speech technique — the ability to transmit cursed energy through words, forcing the world to comply with whatever he says — means he communicates exclusively in rice ball ingredient names to avoid accidentally harming people; and Panda, who is exactly what he sounds like — a cursed corpse that looks like a panda, built by Yaga, with a personality that is immediately warm and trustworthy.
The initial event structure — teams competing to exorcise high-grade curses in a forest environment — is disrupted by an external attack. The three Special Grade Cursed Spirits working with Geto have decided the event is an opportunity: with the students gathered and Gojo present, they can test their capabilities and, crucially, steal something. Hanami — a Special Grade spirit with control over plant life, who represents the earth's resentment of humanity for the destruction of nature — invades the forest. His regeneration is nearly infinite because plants grow and recover. His strength vastly exceeds anything the students can handle.
Except Todo and Yuji. Working in combination, with Todo's Boogie Woogie creating unpredictable positional switches and Yuji landing Black Flashes — punches where cursed energy is applied at the exact moment of impact, multiplying the damage exponentially — they manage to push Hanami to the edge. Then Gojo arrives, having broken through the barrier that was containing him, and deals with Hanami himself in a single demonstration of overwhelming force.
Meanwhile, the real purpose of the attack becomes clear. Mahito used the chaos to infiltrate the storage facility at Jujutsu High and steal: three of Sukuna's fingers, and three Special Grade Cursed Objects — the Cursed Womb: Death Paintings. The event invasion was a diversion. The theft was the objective.
The Goodwill Event concludes not with a traditional competition result but with a baseball game — a comedic deflation after the violence, entirely earnest in its silliness, and one of the season's most effective tonal pivots. After everything that has happened, watching these extremely powerful and extremely strange young people play baseball is almost unbearably charming.
Arc 4: Death Painting Arc (Episodes 22–24)
The three Cursed Womb: Death Paintings that Mahito stole are not standard cursed objects. They are the offspring of a specific historical atrocity — a man named Noritoshi Kamo (the despised ancestor of the current Noritoshi, who hates being associated with him) who performed experiments on humans and cursed wombs, creating hybrid beings who were neither fully human nor fully cursed spirit. Three of these hybrids — Choso, Eso, and Kechizu — exist in the Death Painting Wombs. Mahito has the key to awakening them.
Three young men have been found dead in suspicious circumstances near a junior high school — Saitama Urami East Junior High. Yuji, Megumi, and Nobara are dispatched to investigate. The deaths connect to the activation of cursed spirits in the area, specifically around Yasohachi Bridge, where a curse has been active for some time.
Megumi handles the Yasohachi Bridge curse, pushing himself to his genuine limit in a fight that forces something unprecedented: he unleashes an incomplete Domain Expansion — Chimera Shadow Garden. It is unstable. It does not fully form. But it is enough — the shadows multiply and overwhelm the curse. Megumi has his first Domain Expansion. The moment is enormous. He did not do it cleanly or confidently. He did it because losing was the alternative, and he finally chose to fight to win rather than simply not to die. That distinction — one that Gojo has been pushing him toward — is the core of Megumi's first-season arc.
Yuji and Nobara encounter Eso and Kechizu — two of the Death Painting hybrid brothers who have been awakened. Eso's technique is Wing King: curse marks that spread across anyone touching the cursed blood that drips from his wings, causing the blood to corrode flesh from within. The moment his blood touches Yuji or Nobara, the clock starts ticking. Kechizu is physically powerful and dangerous in close range. Fighting them both while managing the blood-curse's effects on their own bodies is one of the season's most desperate and viscerally compelling battles.
Nobara is poisoned. Yuji is exhausted. They synchronize their attacks — Nobara using her Straw Doll Technique on biological material she has from the brothers, transmitting the damage of her nail-driving directly to their bodies, while Yuji hammers them physically — and they win. The brothers die. This is the first time Nobara and Yuji have killed rather than exorcised, and the show sits with that distinction. Cursed Spirits, when exorcised, simply cease. The Death Paintings were part human. Killing them felt different. The trio discusses this honestly in the aftermath — not as a breakdown, but as people who are taking their situation seriously and processing what it asks of them.
The season's finale reveals that the Higher-Ups — Gakuganji and Mei Mei delivering the report — have recommended Yuji, Megumi, Nobara, Maki, and Panda for promotion to Grade 1. The recommendation is significant. They have earned it. Gojo, getting the report over the phone, is quietly pleased — he wants Yuji to take on more missions but avoid the most dangerous ones for now. He wants Yuji to come back to school and be with his friends. The final shot: the trio, together, returning to Jujutsu High. They are not the same people who stumbled through the Fearsome Womb arc. They are sorcerers now. Not the strongest. Not safe. But genuinely, demonstrably capable.
The post-credits scene shows Mahito recovering with his allies at a hot spring. Comfortable. Planning. Choso — the third Death Painting brother, who Mahito personally took care of awakening — is with them. Everything Geto and the Special Grade curses have been building toward has not been stopped. It has only been delayed. The Shibuya Incident is coming. Season 1 ends knowing exactly what that means, even if the audience does not yet.
Character Explanation — The Full Cast
Yuji Itadori (Main Protagonist)
Yuji is one of shonen anime's most effectively constructed protagonists because his qualities are simple and consistently maintained rather than complicated and situational. He is kind. He is strong. He has specific values — his grandfather's values — about how people should die and what it means to help others. These qualities do not make him simple. They make him specific. In a world full of people who make compromises and calculations and exceptions, Yuji's refusal to do any of those things is both his most admirable quality and the source of his deepest suffering. He cannot save everyone. He tries anyway. The gap between what he can do and what he wants to do is where the show finds most of its emotional weight.
Megumi Fushiguro
Megumi is the most internally complex of the three first-years in Season 1. His Ten Shadows Technique — summoning shikigami from his shadow — is tactically flexible and visually distinctive, but it is his philosophical disposition that defines him. He has decided that he will save only "good people" — that limited resources require prioritization, and he is willing to make that calculation. This worldview is presented not as villainous but as one that Gojo and others recognize as incomplete. The incomplete Domain Expansion at the season's end is the crack in the wall — the moment where Megumi's approach of surviving without truly committing breaks down, and he finds something on the other side of the breakdown. Something that could eventually become very powerful.
Nobara Kugisaki
Nobara is one of the most refreshing characters in recent shonen anime because she is fully herself from her first appearance and does not modify that for anyone's comfort. Her Straw Doll Technique — resonance-based cursed energy transmission through biological material — is creative and requires intelligence to apply well. Her personality is blunt, confident, and capable of real warmth when she chooses to express it. She has no arc in Season 1 that requires her to learn to believe in herself. She already does. Her development is about gaining experience and skill, not confidence she was missing. This is unusual and excellent.
Satoru Gojo
Gojo is the show's most publicly beloved character and also its most careful narrative construction. He is presented as functionally invincible — the strongest sorcerer alive, possessing the Six Eyes (a rare ocular ability that sees cursed energy at atomic resolution) and the Limitless technique (the ability to manipulate space itself, specifically the infinite between any two points, meaning nothing can physically reach him). His blindfold — usually white fabric, worn to reduce the overwhelming sensory input of the Six Eyes — has become one of anime's most recognizable visual signatures. He is also warm, playful, and deeply invested in his students. His presence makes the world feel safer, which is why what happens to him in Season 2 lands so hard. But in Season 1, he is the sun around which everything else orbits: the proof that the good guys have someone capable of winning, and also the reason the villains' plan specifically requires his removal.
Ryomen Sukuna
Sukuna is not a conventional villain in Season 1 because he is not aligned with the actual antagonists. He is simply an ancient, overwhelmingly powerful being who was contained, is now fragmentarily present in Yuji's body, and has his own agenda that runs parallel to everything else without quite intersecting it. He is interested in Megumi specifically — something in Megumi's Ten Shadows Technique captures his attention in a way that will not become fully clear until much later in the franchise. In Season 1 he is a constant, dangerous presence that Yuji manages rather than controls. His moments of full manifestation — the brief periods where Yuji is fully dead and Sukuna is free — are among the season's most genuinely tense sequences.
Mahito
Mahito is Season 1's primary villain and one of the best villain constructions in recent shonen anime. He is not evil in the sense of wanting power or domination. He is curiosity itself — a being born from humanity's hatred of one another who finds human life and death genuinely interesting in the way a scientist finds an experiment interesting. He does not hate humans. He simply does not consider them particularly valuable. His Idle Transfiguration makes him physically dangerous. His philosophical position — that souls are just shapes, that the form of a person can be changed without moral consequence, that suffering is interesting data — makes him conceptually disturbing. He is everything Yuji's worldview opposes, and their conflict is therefore both physical and philosophical.
Kento Nanami
Nanami is the show's other great adult character alongside Gojo. He is a former salaryman who returned to jujutsu work after deciding the corporate world's mediocrity was not worth enduring, which tells you something immediately: he chose the more dangerous option because it was more honest. His Ratio Technique — dividing anything he strikes into a 7:3 ratio and then targeting the weaker point — is methodical and effective. His personality is dry, professional, and unexpectedly paternal toward Yuji, whom he would never describe himself as caring about but visibly does. His relationship with Gojo is one of mutual respect and personal exasperation in roughly equal measure.
Aoi Todo
Todo is the season's great surprise. He is introduced as a threat — enormous, violent, potentially about to kill Megumi for giving a boring answer — and becomes one of the season's warmest and most entertaining presences. His absolute conviction that Yuji is his closest brother, based on the exchange of one sincere answer to one very specific question, is played completely seriously by the show and is completely correct. Todo and Yuji do fight like brothers. Their partnership against Hanami is one of the season's best action sequences. He is absurd and excellent.
Themes and Highlights — What Jujutsu Kaisen Is Really About
Death as the Condition of Everything
Jujutsu Kaisen is more honest about death than most shonen anime allow themselves to be. People die. Junpei dies. People that Yuji could not save, and would not have been able to save regardless of how much he wanted to, die. The show does not argue that effort always succeeds, or that good intentions protect people, or that the protagonist's emotional engagement with a situation determines whether it ends well. It argues that the world is genuinely dangerous and the appropriate response to that danger is to live with full commitment rather than to treat living as something that can be made safe through sufficient heroism. Yuji's grandfather's dying words — die surrounded by people, help others — are not a guarantee of outcomes. They are a code for the process.
Curses as Mirrors
The show's worldbuilding is its most pointed thematic statement. Cursed Spirits are made from negative human emotions — they are not external evils but humanity's own darkness, given form and agency. When Mahito was born, he emerged from human hatred of humans. When Jogo exists, he exists because the earth's relationship with humanity has produced something like resentment. The sorcerers' job — exorcising curses — is functionally the management of humanity's emotional waste. The show uses this not to make excuses for the spirits but to make the question uncomfortable: who is responsible for what humans generate?
What It Means to Be Strong
Each of the three first-years is working through a different version of this question. Yuji's strength is physical and emotional — he is strong in every conventional sense, and the challenge for him is making that strength meaningful rather than merely impressive. Megumi's challenge is learning that strength requires commitment rather than survival — that fighting to win is different from fighting not to lose. Nobara's challenge is applying strength she already has to situations more complex than confidence can resolve on its own. The Kyoto Goodwill Event and Death Painting arcs give all three the fights they need to grow in the specific directions they each need to grow.
Season 1 Highlights
"Kaikai Kitan" playing over the opening sequence for the first time — one of those openings that immediately communicates the quality of what you are about to watch. Gojo's first combat demonstration against Jogo — Unlimited Void deployed as a teaching tool, the most casually devastating display of power in the season. Sukuna taking over during the detention center mission and the horrifying implication of what he is capable of when unconstrained. Mahito transforming Junpei — the scene the show was always building toward, the one that makes Yuji's grief real and Mahito's nature clear in one sequence. The Todo and Yuji vs. Hanami team fight — choreographed with the specific joy of two people who genuinely understand each other's capabilities. Megumi's incomplete Domain Expansion — the moment the show's most internal character commits fully for the first time. Nobara and Yuji finishing the Death Painting brothers together through synchronized cursed technique application. And the quiet final scene of the trio walking back toward school — not triumphant exactly, but present. Alive. Together.
Production Notes — Why MAPPA's Work Here Matters
Studio MAPPA's animation for Season 1 established a new standard for weekly shonen action animation. The fight sequences — particularly the Hanami battle and the Mahito vs. Yuji/Nanami confrontation — are fluid, expressive, and clearly conceived by people who understand that the best action animation communicates feeling as much as it communicates motion. The character expressions throughout are handled with unusual precision: Gojo's smugness, Nanami's weariness, Mahito's curiosity, Sukuna's contempt — all of these register clearly through facial animation even in scenes that do not have dialogue explaining what the character is feeling.
The use of color and shadow throughout is distinctive. The world of Jujutsu Kaisen is not uniformly dark — it has bright, ordinary settings that become threatening when cursed spirits appear, and the contrast is used effectively. The Juju Sanpo post-credits shorts, animated in a simpler, chibi-adjacent style, provide a visual relief valve after episodes that demand sustained intensity.
Hiroaki Tsutsumi's score deserves particular attention. The music during combat sequences has a propulsive quality that amplifies rather than explains the action. The quieter musical choices during emotional scenes are restrained rather than manipulative. And the decision to use "Lost in Paradise" as the ending theme — a song that is genuinely enjoyable rather than merely decorative — gives the first cour a specific mood that lingers after each episode's end.
Conclusion — Should You Watch Jujutsu Kaisen Season 1?
Without any hesitation, yes.
Jujutsu Kaisen Season 1 is the most complete and confident debut season of a major shonen anime in the 2020s. It does not require patience to find its footing. It does not have a weak early run that you push through to reach the good parts. It is good from episode one and gets progressively better, and it ends with every major thread set up for a follow-up that delivers even more in Season 2.
It is also a show that works on multiple levels simultaneously. As pure action anime, the fight sequences are among the best MAPPA has produced. As character drama, the three first-years are individually compelling and work together in ways that feel genuinely earned. As horror, Mahito is legitimately unsettling rather than merely dangerous. And as a story about how to live in a world where death is always present, it is more honest and more thoughtful than the genre typically requires itself to be.
The full franchise — Season 1, the JJK 0 film, Season 2, Season 3 — is now substantially complete, and Season 4 has been announced. This is a complete story you can enter from the beginning and follow to its current conclusion. Season 1 is where it all starts. It is a very good place to start.
FAQ
Q: How many episodes does Jujutsu Kaisen Season 1 have?A: Season 1 has exactly 24 episodes, airing from October 3, 2020 to March 27, 2021. It adapts manga chapters 1 through 63, covering the Introduction/Fearsome Womb arc, the Vs. Mahito arc, the Kyoto Goodwill Event arc, and the Death Painting arc.
Q: Where can I watch Jujutsu Kaisen Season 1?A: All seasons are available on Crunchyroll with both subtitled and English dubbed versions. Crunchyroll also hosts Jujutsu Kaisen 0 and Seasons 2 and 3.
Q: Is the English dub good?A: Yes, genuinely. Adam McArthur as Yuji and Kaiji Tang as Gojo are standouts. The dub was produced by Funimation and is a legitimate alternative to the Japanese original. Both are worth watching.
Q: Is there filler in Season 1?A: No traditional filler episodes. The Juju Sanpo post-credits shorts are comedic and not part of the main narrative, but they are enjoyable and short. Every main episode adapts the manga directly.
Q: Who is Suguru Geto and why does he matter?A: Geto is a former Jujutsu High student who was expelled for turning on humanity and is classified as a curse user. He appears in Season 1 as the organizational leader of the antagonist group. His full backstory — explored in the JJK 0 film and Season 2's Gojo's Past arc — is essential to understanding the show's larger narrative. In Season 1 he is a foreboding presence whose relationship to the main narrative becomes clear over time.
Q: What is Black Flash?A: Black Flash is a technique where a sorcerer applies cursed energy to an attack within 0.000001 seconds of physical impact — the exact timing multiplies the damage by approximately 2.5 to the power of the amount of cursed energy used. It cannot be performed deliberately; it happens when a sorcerer is in a state of complete focus without conscious interference. Todo teaches Yuji to achieve Black Flash during the Kyoto Goodwill Event, and Yuji lands four consecutive Black Flashes during the Hanami fight — a record and a demonstration of his exceptional instinctive capacity.
Q: Should I watch JJK 0 before or after Season 1?A: The film is a prequel set before Season 1's events, but it was released after Season 1 finished airing. Most viewers watch Season 1 first, then the film, then Season 2. Watching the film first is also valid and adds context for Yuta Okkotsu, who becomes significant in Season 2. Either order works; Season 1 first is the most common recommendation.
Q: Does Season 2 pick up immediately from Season 1?A: Season 2 begins with the Gojo's Past arc — a flashback covering Gojo and Geto's relationship as students — before returning to the present timeline with the Shibuya Incident arc. The present-timeline events of Season 2 follow directly from Season 1's conclusion. The Gojo's Past arc is also adapted as a standalone film for Japanese theatrical release.
Thank you for reading! If you have already watched Season 1 and want to talk highlights, the comments are open. Mine is Gojo demonstrating Unlimited Void against Jogo and then immediately going to pick up Yuji from training with one hand. The sequence says everything about who Gojo is in about thirty seconds. Drop yours below.
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