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Chainsaw Man Character Ages: How Old Are Denji, Aki, Power and Asa?

Review • October 18, 2026

Chainsaw Man Character Ages: How Old Are Denji, Aki, Power and Asa?

Chainsaw Man, written and illustrated by Tatsuki Fujimoto, features a cast of devil hunters, supernatural beings, and students whose lives become entangled in dangerous conflicts.

Denji is the central protagonist, but characters such as Aki Hayakawa, Power, Makima, and Asa Mitaka also play important roles in the story.

Fans frequently ask how old these characters are. However, the manga does not provide an exact age for every member of its cast. Some ages are confirmed in official character profiles, while others are commonly repeated estimates.

How Old Is Denji in Chainsaw Man?

Denji is 16 years old at the beginning of the main story. He is a teenager struggling with poverty and inherited debt when his life changes after he forms a connection with Pochita.

Denji subsequently becomes a Devil Hunter and gains the ability to transform into Chainsaw Man.

His age changes as the story progresses, meaning that a character guide should identify the relevant story period rather than assign him one age for the entire series.

Denji's youthful outlook, limited education, and desire for an ordinary life are important parts of his character. Despite his extraordinary abilities, he often makes decisions based on immediate needs and simple personal goals.

How Old Is Aki Hayakawa?

Aki Hayakawa is one of the most important Devil Hunters in the Public Safety organisation. He works alongside Denji and Power and initially takes responsibility for supervising them.

Aki's exact age is not stated in the official anime character profile.

Although secondary sources commonly describe him as being around 20, that number should be treated cautiously unless it is supported by a specific official reference.

Aki is clearly more experienced than Denji and serves as his senior. His disciplined personality and serious approach to devil hunting contrast with Denji's impulsiveness.

His personal history and motivation also make him one of the most significant characters in the first part of the story.

How Old Is Power?

Power is the Blood Fiend and one of Denji's closest companions during the early story.

Power's exact numerical age is officially unknown.

Unlike Denji and Aki, Power is not an ordinary human. She is a fiend, meaning a devil inhabits a human corpse. The story does not establish a conventional human age for her.

Power is known for her loud personality, confidence, selfish behaviour, and unusual sense of humour. Her relationship with Denji and Aki gradually develops beyond their initial disagreements.

Because her age has not been reliably established, assigning her a precise number would be speculation.

How Old Is Makima?

Makima is a high-ranking Public Safety Devil Hunter who plays a central role in Denji's life.

Her exact numerical age has not been officially confirmed in the character information reviewed for this article.

Makima appears as an adult woman and holds a position of considerable authority. However, her appearance and professional status do not establish her chronological age.

Her mysterious background is part of what makes her such an important figure in the story.

How Old Is Kobeni Higashiyama?

Kobeni Higashiyama is 20 years old, according to the official Chainsaw Man anime character profile.

She is a rookie Devil Hunter working in Public Safety. Despite being capable in dangerous situations, Kobeni is frequently anxious and struggles with the risks of her job.

Her age is one of the clearest confirmed figures among the supporting cast because the official anime website explicitly identifies her as a 20-year-old rookie.

How Old Is Hirokazu Arai?

Hirokazu Arai is 22 years old, according to the official anime character profile.

Like Kobeni, he is a rookie in Public Safety's Special Division 4. His age is explicitly stated in the official Japanese character information.

Arai's role in the story is smaller than those of Denji and Aki, but he helps establish the personalities and working conditions of the Devil Hunters around them.

How Old Is Himeno?

Himeno is Aki's experienced partner in Public Safety.

Her exact age is not confirmed in the official character profile reviewed for this article. She is often described in secondary discussions as being in her twenties, but that should not be presented as a verified numerical age.

Himeno's experience as a Devil Hunter and her relationship with Aki are more clearly established than her exact age.

How Old Is Reze?

Reze is a major character whose story becomes closely connected to Denji.

Her exact numerical age has not been officially established in the character information reviewed here. Although she appears to be a young woman, appearance alone cannot confirm a specific age.

Her background and role in the story are more important to the narrative than an unverified age estimate.

How Old Is Asa Mitaka?

Asa Mitaka becomes a major character in the second part of Chainsaw Man.

She is introduced as a high-school student, but the sources reviewed for this guide do not establish a definitive numerical age for her.

Asa's story explores her school life, relationships, insecurities, and connection to Yoru, the War Devil.

Because Yoru is a devil rather than an ordinary human, she should not automatically be assigned Asa's presumed human age.

Chainsaw Man Character Ages at a Glance

The following table distinguishes confirmed ages from information that remains uncertain.

CharacterAgeStatus
Denji16 at the beginningEstablished in the story
Aki HayakawaNot officially confirmedExact age unknown
PowerUnknownFiend; no confirmed human-style age
MakimaUnknownExact numerical age unconfirmed
Kobeni Higashiyama20Confirmed by official anime profile
Hirokazu Arai22Confirmed by official anime profile
HimenoUnknownExact age unconfirmed
RezeUnknownExact age unconfirmed
Asa MitakaNot definitively established hereHigh-school student

The official anime character profiles are the strongest source for Kobeni's and Arai's numerical ages. The other entries are deliberately left unconfirmed where reliable official information is unavailable.

Why Are Some Chainsaw Man Character Ages Unknown?

Tatsuki Fujimoto's story does not provide a comprehensive official age database for the entire cast.

Some characters have their ages stated directly in the story or official character material. Others are described through their jobs, school status, experience, or relationships without a precise numerical age.

Devils and fiends also complicate comparisons because their lifespans and biological circumstances do not necessarily follow ordinary human aging.

For that reason, fan-made character charts can contain estimates that are not confirmed by the manga or official publications.

Final Verdict: How Old Are the Chainsaw Man Characters?

Denji is 16 at the beginning of the story, while the official anime character profile identifies Kobeni Higashiyama as 20 and Hirokazu Arai as 22.

The exact ages of Aki, Power, Makima, Himeno, Reze, and several other major characters are not confirmed in the official sources reviewed for this article.

The most reliable character-age guide distinguishes confirmed information from estimates instead of treating every number repeated online as canon.