Aging Devil in Chainsaw Man is a Primal Fear devil embodying the fear of aging, and the main antagonist of the Aging Devil Arc in Part 2. The Aging Devil rules a realm where no one ages or dies, and the Aging Devil offers its own body to Pochita in exchange for the deaths of 10,000 children. According to Shueisha, Tatsuki Fujimoto wrote and illustrated Chainsaw Man.
The table below records 16 core attributes of the Aging Devil, with each attribute in the first column and the value of the attribute in the second column.
| Detail | Info |
|---|---|
| Full Name | Aging Devil (老いの悪魔, Oi no Akuma) |
| Also Known As | Oi no Akuma; the Primal Fear of aging |
| Species | Devil; Primal Fear |
| Gender | Unknown; the manga never specifies the gender of the Aging Devil |
| Concept | Aging, growing old, and old age |
| Source of Power | Gerascophobia, the fear of growing old |
| Affiliation | Public Safety, through contract; Hell, as its home |
| Domain | Aging’s World, a realm where no one ages or dies |
| First Mention | Chapter 170, “How to Eat Sushi” |
| First Appearance | Chapter 173, “Hard of Hearing” |
| Main Arc | The Aging Devil Arc, Chapter 173 to Chapter 190 |
| Abilities | Time manipulation, rapid aging by touch, mirror attacks from Hell, and the creation of Aging’s World |
| Voice Actor (JP) | Unknown |
| Voice Actor (EN) | Unknown |
| Popularity Poll | 76th place in the Third Popularity Poll with 299 votes |
| Status | Alive; returned to Hell under a contract never to fight Denji, Asa Mitaka, and Hirofumi Yoshida again |
Spoiler warning: This guide covers the complete story of the Aging Devil, including the Public Safety contract to kill 10,000 children, the imprisonment of Denji and Asa in Aging’s World, and the defeat of the Aging Devil in Chapter 190. Readers who have not finished the Aging Devil Arc of Part 2 will encounter full spoilers in every section.
Who Is the Aging Devil?
The Aging Devil is a Primal Fear devil embodying the concept of aging, and one of the most powerful devils in Chainsaw Man. Primal Fear devils embody the primordial fears of humanity, and Primal Fear devils have never died. The Aging Devil belongs to this group alongside the Darkness Devil, the Falling Devil, and the Death Devil.
The Aging Devil draws power from gerascophobia, the fear of growing old. Gerascophobia describes an excessive anxiety about the body changing as time passes, and sufferers avoid mirrors for fear of seeing wrinkles or grey hairs.
The Aging Devil serves as the main antagonist of the Aging Devil Arc, the fifth arc of the Academy Saga in Part 2. The arc runs from Chapter 173 to Chapter 190, and the arc appears in the guide to Chainsaw Man arcs in order.
What Does the Aging Devil Look Like?
The Aging Devil looks like a tall devil with a thin and gaunt physique, resembling a withered aggregate of flesh with several holes in it. The largest hole sits in the center of the chest of the Aging Devil, where the heart of the Aging Devil should be. The face of the Aging Devil emerges from the split head of an old person with long hair.
The face of the Aging Devil is a smooth surface with only a mouth. Several strings connect the smooth face to the two halves of the previous face, and the feet of the Aging Devil have raised heels similar to stiletto shoes.
The Aging Devil sits on a throne made of flesh and bones. Human fingers decorate the back of the throne. The base of the throne rests on the backs of 2 naked men with their hands cut off, and the throne places the Aging Devil above its subjects in Hell.
What Is the Aging Devil’s Personality?
The Aging Devil has an apathetic personality, showing no attachment to its own life or to the lives of others. The apathy explains the strangest demand in the story: the Aging Devil asks to be eaten alive. The Aging Devil treats its own death as a price worth paying for its goal.
The Aging Devil detests youth, most likely because young people do not fear the Aging Devil. The hatred of youth drives the contract demand of the Aging Devil, because the Aging Devil demands the deaths of children in exchange for being eaten. The Aging Devil calls the bargain romantic, and the Aging Devil teases Pochita about the way Denji defeated Makima by eating her.
The Aging Devil is lazy and easily annoyed. The Aging Devil expresses annoyance at the request to strike Pochita, and the Aging Devil grows frustrated at the futility of the attacks of Yoru and Pochita.
The wish of the Aging Devil is that longer human lives let human minds reach new culminations of thought. The Aging Devil wants humans to discover new concepts and unseen possibilities, even at the cost of the death of the Aging Devil and the deaths of children.
What Are the Aging Devil’s Powers?
The Aging Devil has 7 main powers: nigh-absolute immortality, instant regeneration, time manipulation, rapid aging by touch, mirror attacks from Hell, remote harm through sacrificed body parts, and the creation of Aging’s World.
Nigh-absolute immortality and instant regeneration: Pochita slices the Aging Devil repeatedly with chainsaws, and the Aging Devil heals instantaneously after every cut. Pochita hacks the Aging Devil down several times in the final battle, and the Aging Devil returns to full form after each attack. The immortality forces every opponent of the Aging Devil to seek a solution other than killing.
Time manipulation: The Aging Devil stops time for a target, as shown when Yoru fires a bullet from the Gun Goddess weapon. The Aging Devil halts the speeding bullet, observes the bullet and the time-frozen Yoru, and then destroys the bullet.
Rapid aging by touch: Physical contact with the Aging Devil ages a target in seconds. The touch of the Aging Devil crumbles Yoru’s bullet into dust, and the touch of the Aging Devil turns Pochita into a tree.
Mirror attacks from Hell: The Aging Devil manifests floating mirrors that connect directly to Hell, and the Aging Devil strikes through the mirrors with giant hands. The connection works in both directions, because humans contact the Aging Devil through mirrors as well. Public Safety sends written messages to the Aging Devil through a mirror to initiate the contract attacks.
Remote harm through sacrificed body parts: The Aging Devil sacrifices the body parts of contracted humans to damage a distant target. Three Public Safety agents cut off a finger each and write the word “HIT” on mirrors in blood, and the Aging Devil strikes Pochita with a single powerful attack.
What Is Aging’s World?
Aging’s World is an alternate realm created by the Aging Devil, where residents never age, never need food or water, and cannot die. The realm appears as a lush forest with a lake, and the realm typically snows, as shown after Denji vomits the head of the Snow Devil and the forest fills with snow. The realm traps its residents for eternity.
The Aging Devil selects people who do not wish to age and brings them to the realm under contract. The most recent victim of the Aging Devil before Denji’s group made a contract 82 years earlier, and the victim states that escape from the realm is nearly impossible.
Devil powers do not function normally inside Aging’s World. Yoru cannot kill Denji inside the realm, and Denji reverts to human form instead of dying from the attacks of Yoru. The nullification rule matters at the climax, because the Aging Devil loses access to its own powers when its true body enters the realm.
Residents who remain in the realm for 1,000 or 2,000 years turn into trees upon reaching a culmination of thought. The tree people remain flesh and blood inside, and a devil can eat tree people to regenerate, which becomes the key to the survival of Denji and Pochita.
Tree people taste like lotus root, according to the Aging Devil. The tree people return to their original bodies in the real world only after the tree rots into soil and the body and mind of the person become one with nature.
What Is the Aging Devil’s Contract With Public Safety?
The contract of the Aging Devil with Public Safety is a bargain in which the Aging Devil allows Pochita to devour the Aging Devil without resistance, and Public Safety kills 10,000 children in return. The children must hold Japanese citizenship, range from infancy to 9 years old, and die in front of mirrors. The deaths occur in proportion to the eating, because each bite Pochita takes of the Aging Devil kills more children.
Public Safety wants the bargain because eating a devil erases the concept of the devil from existence. Erasing the Aging Devil would remove aging from the world, and Public Safety presents the plan as a path to evolve humanity and prevent the Age of Devils.
Fumiko Mifune reveals the contract terms at a courthouse, and the revelation shocks the government officers who hear the terms. The Aging Devil has no attachment to life, so the Aging Devil accepts the bargain freely.
The contract also covers combat support against Pochita. Public Safety agents sacrifice body parts through mirrors, and the Aging Devil strikes Pochita on command. Later in the arc, the Aging Devil offers a second contract to a group of Public Safety agents, using their bodies as weapons in exchange for saving the agents from the attacks of Pochita.
What Happens to the Aging Devil in the Aging Devil Arc?
The Aging Devil enters the story in Chapter 173, when Public Safety activates its contract to subdue Pochita after Pochita erases the Ear Devil from existence. The Aging Devil receives the message of Public Safety in the depths of Hell and slams a fist near a projected mirror, striking Pochita with a giant fist.
Pochita breaks free quickly and slices off 2 fingers of the Aging Devil. Yoshida then uses the Octopus Devil to force Pochita to vomit the head of the Ear Devil, restoring the ears of everyone.
The Aging Devil attacks again alongside Yoru and Samurai Sword, using 2 colossal hands against Pochita. Pochita overpowers all 3 attackers swiftly, and the Aging Devil loses both hands in the failed attack.
Yoru unleashes a devastating attack that fatally damages Pochita, and the Aging Devil reveals itself to the wounded Chainsaw Devil. The Aging Devil offers Pochita some of its blood and asks Pochita to eat the entire body of the Aging Devil from top to bottom. The Aging Devil explains that each portion Pochita consumes kills more children under the contract with Public Safety.
Pochita refuses the offer and tries to flee, but the Aging Devil holds Pochita by the head and mocks Pochita. Yoru fires a bullet at the Aging Devil for stealing her confrontation, and the Aging Devil stops the bullet with time manipulation and crumbles the bullet into dust by touch. The Aging Devil declares that neither Pochita nor Yoru is mature enough to speak with the Aging Devil.
The Aging Devil then sends Yoru, Asa, and Denji into Aging’s World, telling them to grow up. Asa panics upon learning the fate of those who remain in the realm for 1,000 years, and Asa trips onto Denji and wakes Denji from unconsciousness.
Inside the realm, Denji feasts on the organs of tree people while pulling his cord, and the feasting lets Pochita regenerate continuously in the real world. The Aging Devil appears to Denji through a tree and offers a way out through convincing Pochita to eat the Aging Devil. Denji rejects the offer and calls the Aging Devil evil, because Pochita does not want to kill innocent children to save himself.
Pochita battles the Aging Devil and Public Safety in the real world while Denji feeds Pochita from inside the realm. Pochita hurls his own heart at Public Safety in Chapter 186, then regenerates from the heart. The Aging Devil sacrifices the organs of contracted agents to cleave Pochita apart, and Pochita regenerates from every attack.
How Is the Aging Devil Defeated?
The Aging Devil is defeated when Denji’s group traps the true body of the Aging Devil inside Aging’s World, where the powers of the Aging Devil stop working.
Yoshida reaches through the mouth of Denji with a tentacle of the Octopus Devil, but the Aging Devil severs the limb. Yoru forces the upper half of her body through the mouth of Denji with the Right Gun Gauntlet, and the Aging Devil rapidly ages Yoru and forces Yoru to retreat.
Fumiko betrays the Aging Devil by offering her heart to the Octopus Devil, and the heart lets Yoshida command the Octopus Devil to swallow the Aging Devil whole. The latest victim of the Aging Devil then drags the Aging Devil through the mouth of Pochita and into Aging’s World.
Yoshida negotiates the final deal in Chapter 190, “To Their Respective Worlds”. The terms send Yoshida, Denji, Asa, Yoru, and the victim back to the human world, and the terms return the Aging Devil to Hell. The terms also forbid the Aging Devil and Denji’s group from fighting each other again.
The Aging Devil questions what happens in the event of refusal, and Denji answers the question with a threat. Everyone can leave through the mouth of Denji except Denji himself, so refusal would trap the Aging Devil with Denji for eternity. The Aging Devil accepts defeat and sends everyone back to the real world, and the arc closes with the Aging Devil alive but neutralized.
Aging Devil’s Relationships With Other Characters
Denji and Pochita: Pochita is the devourer the Aging Devil seeks, and Denji is the human host who controls the mouth Pochita eats through. The Aging Devil offers its body to Pochita and begs Pochita to eat, and Pochita refuses the bargain because eating would kill children.
Asa Mitaka and Yoru: Asa and Yoru are prisoners of the Aging Devil and rivals for the attention of Pochita. The Aging Devil imprisons Asa and Yoru in Aging’s World for immaturity, and the Aging Devil ages Yoru when Yoru tries to escape through the mouth of Denji.
Hirofumi Yoshida: Yoshida is the negotiator who ends the arc and the devil hunter the Aging Devil compliments for subduing Pochita. Yoshida uses the Octopus Devil to restore the ears of everyone after the first mirror strike, and Yoshida proposes the final contract that returns everyone to their own worlds.
Fumiko Mifune: Fumiko is the Public Safety agent who reveals the child-sacrifice contract and later betrays the Aging Devil. Fumiko rallies her colleagues to continue the attack on Pochita. Fumiko then offers her heart to the Octopus Devil, and the sacrifice lets Yoshida command the Octopus Devil to swallow the Aging Devil whole.
Public Safety: Public Safety is the contracting partner of the Aging Devil and the organization that agrees to kill 10,000 children. Public Safety activates the mirror-strike contract against Pochita, and Public Safety agents sacrifice fingers and organs as weapons against Pochita. The partnership ends when the final contract sends the Aging Devil back to Hell and forbids further fighting.
Samurai Sword: Samurai Sword is the ally of the Aging Devil in the failed joint attack on Pochita. Samurai Sword fights alongside the Aging Devil and Yoru, and Pochita overpowers all 3 attackers swiftly.
The Aging Devil’s latest victim: The victim is a devil hunter transported into Aging’s World 82 years before Denji’s group arrives. The victim drags the Aging Devil through the mouth of Pochita into the realm, and the victim returns to the human world under the final contract, after 82 years of imprisonment.
What Are the Most Common Questions About the Aging Devil?
Summary of Aging Devil in Chainsaw Man
Aging Devil in Chainsaw Man is a Primal Fear devil embodying the fear of aging, debuting in Chapter 173 as a weapon of Public Safety against Pochita. The Aging Devil strikes Pochita through mirrors from Hell, and the Aging Devil loses both hands in a joint attack with Yoru and Samurai Sword.
The Aging Devil then offers its body to Pochita in exchange for the deaths of 10,000 Japanese children between infancy and 9 years old in front of mirrors. Pochita refuses the bargain, and the Aging Devil imprisons Denji, Asa, and Yoru in Aging’s World, a realm where no one ages or dies and where residents turn into trees after 1,000 or 2,000 years.
Denji feeds Pochita by eating tree people inside the realm, and Pochita battles the Aging Devil and Public Safety without dying. Fumiko betrays the Aging Devil by giving her heart to the Octopus Devil, and the latest victim of the Aging Devil drags the Aging Devil into its own realm, where the powers of the Aging Devil stop working.
Yoshida negotiates the final contract in Chapter 190 that returns everyone to their own worlds and forbids further fighting. The Aging Devil appears only in mention afterward, in Chapter 191, “Cuz I’m a Devil”.
