Chainsaw Man Fan Theories and Conspiracies

Chainsaw Man‘s brutal, surreal, and emotionally raw world has captivated audiences, leaving a trail of blood, breadcrumbs, and burning questions in its wake. Tatsuki Fujimoto masterfully layers absurdist comedy over profound mystery, creating a fertile ground for fan speculation. From the meaning of a simple promise to the very nature of reality, here are the most compelling theories and conspiracies swirling around Denji, Pochita, and the Chainsaw Man universe.

Note: This is only fan theories, not necessary the official truth about real canon story. For the newbie, get a lot of experience with the anime and manga before reading this page.

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The Core Enigma: The Chainsaw Devil’s True Nature

• The “Erasure” Theory: This is the grand, foundational conspiracy. The Chainsaw Devil (Pochita) is feared by all other devils not just for his strength, but for a unique ability: when he devours a devil, he doesn’t just kill it—he erases its name and concept from existence. This means all of history, memory, and reality is rewritten. The “Hell” devil we know might be the second “Hell” devil; the first was eaten and forgotten. This theory asks: what fundamental aspects of reality have already been erased from our understanding?
• Pochita as a “Hero of Hell”: Building on the erasure theory, some speculate Pochita wasn’t always a mindless force of destruction. He may have been a primordial devil who fought in a cosmic war, using his power to erase “worse” concepts from reality, making him a paradoxical “hero” from a devil’s perspective. His weakened, dog-like form is the result of this ancient conflict.
• The “Freedom” Devil Theory: What concept does the Chainsaw Devil truly represent? Some argue it’s not “chainsaws,” but something more abstract: the sound of a buzzing chainsaw—a sound of chaos, construction, and destruction. Others go deeper, proposing he is the Devil of Rebellion, Anarchy, or even True Freedom—the power to violently cut away all constraints, be they societal, physical, or even conceptual.

Character Mysteries: Motivations and Identities

• Makima’s Contract & Goal: Theories about the Control Devil’s endgame are endless. A leading one suggests her desire to be “equal” to Chainsaw Man wasn’t about power, but about connection. By having him devour her and the other major primal fears (Death, War, Famine, etc.), she would achieve a form of ultimate, horrific unity, creating a “peaceful” world under a single, controlled entity—herself, merged with everything.
• Denji’s “Ordinary” Dream as a Shield: Denji’s simple desires (toast with jam, a girlfriend) are often seen as childish. A compelling theory posits these are not just character traits, but a psychological fortress. By anchoring himself to mundane human needs, he unconsciously protects his mind from being overwhelmed by the cosmic horror of Pochita’s true nature and the devils’ interest in him.
• The “Reincarnation” Conspiracy: Certain characters bear striking visual or thematic similarities to others. Are some characters reincarnated devils or humans, carrying echoes of past relationships into new cycles? The rules of devil rebirth (returning to Hell or Earth upon death) make this a persistent theory for explaining deep, irrational bonds and hatreds.
• Aki’s Future & the “Curse” Devil: From the moment of his introduction, theorists have been obsessed with Aki’s fate. Many believe his contract with the Future Devil was far more sinister than shown, and that its cryptic laughter hints at a specific, unavoidable tragic end it has already seen. The theory suggests his storyline is a predestined countdown.

Structural & Symbolic Conspiracies

• The “Four Horsemen” Hierarchy: It’s widely accepted that Makima (Control) is part of a set of four “horseman” devils, alongside Famine, War, and Death. The conspiracy deepens with the question: Who or what do they serve? Is there a “God” or “Conquest” devil above them? Are they fighting a silent war against another faction, like the “Justice” devil or the primal fear of “The Unknown”?
• The Nature of Hell: Hell isn’t just another battlefield; it’s a core reality. One theory posits that Hell and Earth are two sides of the same coin, and the “terror” that fuels devils is a finite resource they fight over. The “Gun Devil” attack was less an invasion and more a hostile corporate takeover. The doors between worlds are a controlled system, not a natural phenomenon.
• The “Movie” Metaphor: Fujimoto’s love of cinema is no secret. A meta-theory suggests the entire Chainsaw Man universe operates on cinematic logic. Devils are like movie monsters, fears shaped by collective human “viewing.” Denji, with his simple desires, is the ultimate “audience surrogate,” and Power is the chaotic, special-effects-driven spectacle. This theory reads the story’s pacing and visual beats as literal clues to its operating system.
• Denji’s Heart & The True Contract: The contract between Denji and Pochita seems simple: a heart for a life. But what are the fine print terms? Some speculate Denji is slowly becoming Pochita with every transformation, and that the dog-like Pochita we see is just the echo of a previous contractor who lost themselves completely. The chainsaw cord on his chest isn’t a starter—it’s a fuse.

The True Identity of Pochita: The Chainsaw Devil or Something More?

The most fundamental mystery of the series revolves around Pochita, the diminutive devil who fused his heart with Denji. While he is known to the world as the Chainsaw Devil, a significant and well-argued fan theory proposes that his true identity is something far more profound: the “Birth Devil”.

• A Tool’s Original Purpose: The theory’s cornerstone is the historical origin of the chainsaw itself. Invented in 1780, it was first used as a medical tool to assist with difficult childbirths. This connection between chainsaws and birth is a powerful piece of evidence that Pochita’s design is no coincidence.
• The “Organ Scarf” as an Umbilical Cord: In his true devil form, Pochita sports a long, rope-like “organ scarf.” This feature is often interpreted as a representation of an umbilical cord. Notably, this scarf attaches to Denji’s navel—the exact spot where an umbilical cord connects—and wraps around his neck, which could symbolize a “cord accident,” a medical complication during birth.
• Erasure and the Cycle of Life and Death: Pochita’s most terrifying ability, the power to erase concepts and devils from existence, is seen as the ultimate control over life. It’s said that before devils are reincarnated from Hell to Earth, they hear the sound of a chainsaw revving. This positions Pochita not as an agent of death, but as the gatekeeper of birth and rebirth. His ability to permanently erase a devil is the ultimate denial of this cycle, which would make sense for a Birth Devil. This theory is further bolstered by the narrative’s shift toward a confrontation with the Death Devil, Pochita’s thematic opposite.

This theory re-contextualizes Pochita’s fight against the Four Horsemen—Control, War, Famine, and Death. It may have been an instinctual war against his polar opposite, making his connection to Denji, a boy seeking a simple, “normal” life, a deeply poignant search for meaning beyond his cosmic function.

The Horsemen in Hiding: Unmasking the Disguises

The Four Horsemen of the Apocalypse are major players in the Chainsaw Man universe, but they don’t always operate in the open. Fan theories are rife with speculation about which characters might be horsemen in disguise.

The Yoshida Conundrum: Was He the Death Devil?

One of the most heated debates surrounded the character Hirofumi Yoshida, a seemingly laid-back and powerful devil hunter. The “Yoshida is the Death Devil” theory gained immense traction for several reasons :

• The Loaded Question: Yoshida was the first character in the entire series to mention the Death Devil by name, asking Denji, “Do you think Chainsaw Man would eat the Death Devil?”. This seemed like too pointed a question for a mere devil hunter.
• Connection to Fami: At the aquarium, Yoshida and Fami, the Famine Devil, shared a locked gaze that suggested a pre-existing, deep familiarity between them, hinting at a relationship between equals.

However, this theory has been largely debunked by the manga’s progression.

• The Sisterhood Factor: Fami consistently refers to the Death Devil as her “sister,” implying a feminine identity for the fourth Horseman.
• Canon Confirmation: In Chapter 146, Nayuta (the reincarnated Control Devil) explicitly refers to the Death Devil as female and confirms her impending descent to Earth. This effectively rules out Yoshida.

Kobeni: The Accidental Horseman?

With Yoshida out of the running, theorists have turned their attention to another unlikely candidate: the perpetually terrified and accident-prone devil hunter, Kobeni Higashiyama. Her uncanny ability to survive situations that should be certain death has led to speculation that she might be more than she appears.

• The “Fortune Devil” Theory: Some fans propose that Kobeni isn’t a Horseman at all, but rather the Fortune (or Luck) Devil. Her improbable survival streak is then explained not by skill, but by her supernatural ability to manipulate luck in her favor, often at the expense of those around her.
• The “Hunger Devil” Alternative: Another theory posits that her desperate circumstances and constant references to needing money for her family are a front for the Hunger Devil, a being of insatiable need.

The Nostradamus Prophecy and the “King of Terror”

The narrative of Part 2 is heavily influenced by the looming Nostradamus prophecy, which predicts the arrival of a “great King of terror” in the seventh month of the year 1999. While this is presented as a foreboding apocalyptic event, a compelling theory suggests it is a fabrication or a misinterpretation.

• The “Nuclear War” Interpretation: A detailed fan theory argues that the prophecy’s mention of a “great King of terror” and the reign of “Mars” (the Roman god of war) is a metaphor for the return of nuclear weapons. This aligns perfectly with Yoru, the War Devil’s, stated goal of reviving the Nuclear Weapons Devil, which Pochita had previously erased.
• A Self-Fulfilling Prophecy: Another, more meta, theory posits that the prophecy itself is a tool to generate massive, collective fear. The Chainsaw Man Church or other unseen forces could be manipulating humanity by spreading this apocalyptic fear, hoping to either summon a new, immensely powerful devil born from that specific terror, or to strengthen the existing Horsemen. In this view, the prophecy is less a prediction and more a weapon of mass psychological manipulation.

The Door, the Door, the Door

Since the very first season, a haunting image has persisted in Denji’s dreams: a mysterious door that Pochita explicitly told him never to open. This has become one of the story’s most enduring mysteries.

• A Memory Vault: The most common theory is that behind the door lies the true, repressed memory of Denji’s past, particularly the death of his father. Opening it would force him to confront a truth he has buried so deep that it could fundamentally alter his psyche.
• The “Pochita Door”: A more explosive theory suggests the door leads not to a memory, but to the true, primordial consciousness or power of Pochita. The Pochita we know as a friendly dog-devil is a “tamed” or “sealed” version. Opening the door could unleash the full, terrifying might of the original Chainsaw Devil, with Denji as its vessel, at the cost of his own identity.

The War Devil’s Love for America and the Return of Reze

Recent chapters have unveiled a shocking and darkly satirical connection: Yoru, the War Devil, is in love with America. This wasn’t a random development. Fans discovered that the scar on Yoru’s face is nearly identical to the logo of Lockheed Martin, a major American defense contractor. This brilliant piece of foreshadowing cements her as a being intrinsically linked to the machinery and ideology of modern warfare.

The return of nuclear weapons to the story has also rekindled hope for the return of a beloved character: Reze, the Bomb Devil. Since her “death” at the hands of Makima, fans have speculated about her fate. The reintroduction of nuclear weapons, which would necessitate the rebirth of the Nuclear Weapons Devil, could pave the way for Reze’s return as a key player. Her Soviet origins create a potential narrative conflict with the American-aligned War Devil, setting the stage for a devastating clash between the fear of bombs and the fear of war itself.

The “Extinction Devil” and the Devil’s Boogeyman

A more philosophical theory attempts to explain why the Chainsaw Devil is so uniquely feared by other devils. It proposes that Pochita isn’t the Chainsaw Devil at all, but the “Extinction Devil”. Extinction is a fear that transcends death—it is the fear of never having existed, of being completely and utterly forgotten. This power would make him stronger than even the Death Devil, as one can make peace with death, but never with being erased from all memory.

This theory posits a chilling origin story: long ago, there was a human devil hunter who wielded a chainsaw and made a contract with the “Forgettance Devil” to permanently erase any devil he killed. This hunter became the “boogeyman of hell.” As devils spread rumors and fear of this “Chainsaw Man,” their collective terror eventually gave birth to a new devil—one born not from human fear, but from the fear of devils themselves. This being is Pochita, the living embodiment of the devils’ own boogeyman.