You want to know about the ages of Demon Slayer characters? Many fans ask this question as knowing how old these characters are helps you understand their story better.

Demon Slayer: Kimetsu no Yaiba is a show that many people love. It has great characters like Tanjiro Kamado and the strong Hashira fighters. But how old are they? And how do their ages change in the show?

Here, you will learn about the ages of the main characters and Hashira in Demon Slayer. You will see how old they are in different seasons. Let’s start looking at the ages of your favorite Demon Slayer characters. If you have watched the show for a long time or just started, you will find this interesting.

Tanjiro Kamado

Tanjiro Kamado is the main character in Demon Slayer. He is a kind and strong character and his story starts with a sad event that makes him become a Demon Slayer. Demons kill his family and turn his sister Nezuko into a demon and then he wants to get back at the demons and help his sister.

Ages Across Seasons

Season	Age
Season 1	13
Later Seasons	15
End of Series	16

Detailed Age Progression:

Season 1:

• Age: 13 years old

At the start of the series, Tanjiro is a young boy of 13. He is the eldest son in his family and also he is responsible and hardworking. In first episode, it is shown that Tanjiro is selling charcoal to support his family. The massacre of his family and Nezuko’s transformation push him into the world of Demon Slayers

Later Seasons

• Age: 15 years old

He grows both in skill and ages as Tanjiro trains under Sakonji Urokodaki and joins the Demon Slayer Corps. By this time, he is 15 years old and he spent years honing his abilities. His journey becomes more intense as he faces stronger demons and grows closer to his friends​

End of Series:

• Age: 16 years old

By the end of the series, Tanjiro is 16 years old. His experiences have made him a seasoned Demon Slayer, capable of taking on the most formidable foes. His physical and emotional growth is evident as he continues to fight for his sister and the safety of others​

Also Read: (Spoilers!)Is Kokushibo Related to Tanjiro in Demon Slayer?

Nezuko Kamado

Nezuko Kamado is younger sister of Tanjiro and he undergoes a transformation early in the series. Even though she becomes a demon, she retains her love and protective nature towards her brother. Her age progression is unique because her physical form does not age after her transformation.

Detailed Age Progression:

Season	Age	Birthday
Season 1	12	December 28
Later Seasons	14	December 28

Season 1:

• Age: 12 years old

Nezuko is 12 years old at the beginning of the series. Her transformation into a demon occurs at this age which increases her physical growth. She lost her human form but Nezuko’s protective instincts for her brother remain strong. She shows extraordinary strength and resilience and many times she steps in to protect Tanjiro from harm

Later Seasons:

• Age: 14 years old (chronologically)

Although Nezuko’s physical appearance remains that of a 12-year-old, her chronological age advances to 14 years old as the story progresses. Her demon form allows her to heal quickly and gain strength. This skill makes her a formidable ally in battles against other demons. The things that makes her better than other demon is that she has humanity and she also has conquered the Sun. Her bond with Tanjiro deepens, highlighting her emotional maturity despite her unchanged appearance​.

Also Read: Who is Tanjiro’s Dad?

Zenitsu Agatsuma

Zenitsu Agatsuma is a close friend of Tanjiro. He is a character with extreme fear but surprising strength. In the series, we often see him as cowardly character but he possesses remarkable combat abilities, mainly when he is unconscious. His character adds both humor and depth to the series.

Detailed Age Progression

Season	Age	Birthday
Throughout Series	16	September 3

• Age: 16 years old
• Birthday: September 3

Zenitsu is consistently 16 years old throughout the series. Despite his constant fear and anxiety, he is incredibly skilled in the Thunder Breathing technique. His true potential is often revealed when he is unconscious which allows his instinctive fighting skills to take over.

He also falls in love with Nezuko and in the manga, Zenitsu marries Nezuko. He has mastered only one form of thunder breathing, but later in the manga, he goes boss mode and uses 7th form of thunder breathing.

Inosuke Hashibira

Inosuke Hashibira is another close companions of Tanjiro. He is known for his wild and aggressive behaviors. He is raised in the mountains by boars, and that is why, he has a unique fighting style and a fierce personality. His character adds a raw and primal energy to the series.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	15	April 22

Throughout Series:

• Age: 15 years old
• Birthday: April 22

Inosuke is 15 years old throughout the series. He is introduced as a wild and untamed boy who wears a boar mask, which he made from the head of the boar that raised him. Inosuke’s combat skills are exceptional as he uses the Beast Breathing technique that he developed on his own.

His journey with Tanjiro and the others helps him learn about teamwork and trust, although he often struggles with social interactions due to his upbringing. Even after his rough exterior, Inosuke shows moments of vulnerability and growth especially during the entertainment arc.

Also Read: Does Tanjiro Become a Demon?

Giyu Tomioka (Water Hashira)

Giyu Tomioka is the Water Hashira in the Demon Slayer Corps having stoic and reserved nature. Giyu is one of the first Hashira introduced in the series. His sense of justice and skill in combat make him a key figure in the Demon Slayer Corps.

Detailed Age Progression:

Season	Age	Birthday
Season 1	19	February 8
Later Seasons	21	February 8

Season 1:

• Age: 19 years old

Giyu is introduced as a 19-year-old Hashira who saves Tanjiro and Nezuko early in the series. As I have already mentioned that he has a stoic nature but still he shows compassion by sparing Nezuko’s life and encouraging Tanjiro to join the Demon Slayer Corps. His mastery of Water Breathing techniques makes him a formidable warrior

Later Seasons:

• Age: 21 years old

By the later seasons, Giyu is 21 years old. His character remains a strong and silent protector. He many times guide and support Tanjiro and the other young demon slayers. Giyu’s backstory, which includes the loss of his family to demons, adds depth to his character and explains his dedication to the cause​

Shinobu Kocho (Insect Hashira)

Shinobu Kocho is the Insect Hashira. She is known for her bright and friendly demeanor that conceals a deep hatred for demons. Her combat style is unique and she has also helped in training of Kanao Tsuyuri.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	18	February 24

Throughout Series:

• Age: 18 years old
• Birthday: February 24

Throughout the series. She is introduced as a cheerful and kind individual but beneath her smile lies a fierce hatred for demons due to the loss of her sister. Shinobu uses the Insect Breathing technique that involves poison-coated weapons to kill demons. She is incredibly agile and lethal in combat. Her interactions with Tanjiro and the other demon slayers reveal her caring nature and her dedication to avenging her sister.

Kyojuro Rengoku (Flame Hashira)

Kyojuro Rengoku has flamboyant and cheerful personality. He is the Flame Hashira and has a strong sense of duty and a passionate commitment to protecting humanity from demons. His combat style(Flame Breathing) mimics the movements and abilities of flames which makes him a powerful and dynamic fighter.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	20	May 10

Throughout Series:

• Age: 20 years old
• Birthday: May 10

Kyojuro is 20 years old during the events of the series. He is introduced as a highly skilled and dedicated Hashira who takes his responsibilities seriously. His cheerful demeanor and positive attitude are infectious that inspires those around him.

Kyojuro is deeply committed to his duty as a Hashira and is willing to make great sacrifices(Which he did in the mugen train arc) to protect others​. He sacrificed himself during the battle with Akaza and it was one of emotional moment of the series. The best part is, he was still smiling.

His combat style, Flame Breathing, involves powerful and precise attacks that resemble the intensity and heat of flames

Tengen Uzui (Sound Hashira)

Tengen Uzui is the Sound Hashira with eccentric personality. He is a former ninja with a unique combat style that combines the use of sound and explosives. Tengen’s character is complex and he retired after the entertainment arc battle

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	23	October 31

Throughout Series:

• Age: 23 years old
• Birthday: October 31

He stands out with his flashy and extravagant personality and he is 23 years old. He often proclaimed his love for flamboyance. Tengen’s background as a ninja adds a unique dimension to his fighting style, which uses Sound Breathing techniques to disorient and defeat demons​. His care and protective nature are evident in his relationships with his three wives, whom he values deeply.

Tenzen loses his arm in the Entertainment arc but still he and his team manages to defeat the Upper Moon 6 demon(Gyutaro and Daki). After that battle, he decides to live with his 3 wife

Mitsuri Kanroji (Love Hashira)

Mitsuri Kanroji is the Love Hashira having passionate and emotional nature. Her unique combat style, Love Breathing, reflects her agility and flexibility. It makes her a graceful and effective fighter. Mitsuri’s character is marked by her warmth and dedication to protecting humanity.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	19	June 1

Throughout Series:

• Age: 19 years old
• Birthday: June 1

Mitsuri is 19 years old during the events of the series. She has a bright and cheerful personality and it makes her seem younger than she is. Mitsuri’s Love Breathing technique involves whip-like attacks that utilize her agility and speed which allows her to strike with precision and grace.

She has childish characteristic she is indeed committed to her role as a Hashira and puts in maximum effort to protect humanity from demons. Her strength can seen when she fought with Hantegu (Upper Moon 4 demon). Even though she did not beat herself, but she managed to fight one of the part of demon till Tanjiro beheaded Hantegu

Muichiro Tokito (Mist Hashira)

Muichiro Tokito is the Mist Hashira having impassive and air-headed demeanor. He his really young but still he is a highly skilled fighter. The Mist Breathing technique helps him to confuse and defeat his opponents. Muichiro’s character evolves significantly throughout the series as he regains his lost memories and emotional depth.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	14	August 8

Throughout Series:

• Age: 14 years old
• Birthday: August 8

Muichiro is the youngest Hashira in the series as he is just 14 years old. Even with this young age, he is exceptionally skilled with the Mist Breathing technique. This technique relies on creating confusion and obscuring the opponent’s senses.

Initially, Muichiro appears detached and aloof and many times it is seen that he is lost in thought and seemingly unaffected by his surroundings​​. However, as he regains his memories and recalls his tragic past, he becomes more expressive and emotionally connected, particularly with Tanjiro. He then develops a soft spot for Tanjiro. Muichiro’s journey highlights his growth from an emotionally distant individual to a compassionate and dedicated Hashira.

Sanemi Shinazugawa (Wind Hashira)

Sanemi Shinazugawa is the Wind Hashira. His harsh personality stems from a tragic past and a deep-seated hatred for demons and because of this, he has aggressive and hot-headed nature. Sanemi’s combat style, Wind Breathing, relies on swift and powerful attacks.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	21	November 29

Throughout Series:

• Age: 21 years old
• Birthday: November 29

Sanemi is 21 years old during the events of the series. He is characterized by his abrasive and impulsive behavior and often coming across as harsh and unapproachable. This behavior is a result of his traumatic experiences where he lost his family to demons.

Sanemi’s hatred for demons is intense and that is why, his approach to demon slaying is ruthless​. Still, he has a strong sense of duty and cares deeply for his fellow demon slayers, mainly for his younger brother, Genya. Sanemi’s Wind Breathing technique involves whirlwind-like slashes that are both rapid and devastating

Obanai Iguro (Serpent Hashira)

Obanai Iguro is the Serpent Hashira and he carries a snake on his shoulder. He is strictly committed to the rules and his cold, calculating nature. Serpent Breathing involves twisting and bending his sword like a serpent which makes his attacks unpredictable and deadly.

Detailed Age Progression:

Season	Age	Birthday
Throughout Series	21	September 15

Throughout Series:

• Age: 21 years old
• Birthday: September 15

Obanai is 21 years old during the series. As I said, he is a stickler for the rules and can be harsh and unforgiving (both to himself and others). This behavior and strict adherence to the Demon Slayer Corps’ code are influenced by his upbringing and the scars he bears from his past​​. That is why, he is deeply loyal and has a strong sense of justice.

Gyomei Himejima (Stone Hashira)

Gyomei Himejima is the Stone Hashira and the oldest Hashira in the last Demon Slayer Corp. He renowned for his immense physical strength and gentle, compassionate nature. He has intimidating appearance but Gyomei is soft-spoken and deeply spiritual, often seen praying with his prayer beads. Stone Breathing uses the ground and surroundings to deliver powerful, earth-shaking attacks.

Season	Age	Birthday
Throughout Series	27	August 23

Detailed Age Progression:

Throughout Series:

• Age: 27 years old
• Birthday: August 23

Gyomei is 27 years old. Just like most of the other Hashira, his backstory is marked also by tragedy. He lost the children he cared for to a demon attack. This event solidified his resolve to protect others from demons and it led him to join the Demon Slayer Corps​.

Gyomei’s imposing stature and physical prowess make him a fearsome warrior, but his gentle and kind-hearted nature endears him to his comrades. When I first saw him, I thought he must be the weakest hashira as it shown him crying in the series. But later, I found out it is the opposite. He is the strongest among all the current Hashira. Even, he developed the Demon Slayer Mark during the battle with Muzen

Conclusion

In Demon Slayer: Kimetsu no Yaiba, the characters’ ages are crucial for understanding their growth and the story’s dynamics. Each character, from the main protagonists to the Hashira, has a unique background and set of skills that shape their journey.

Tanjiro, Nezuko, Zenitsu, Inosuke, and the Hashira face different challenges that define who they are. Knowing their ages and birthdays gives more insight into their personalities and actions. This connection enhances the experience, making fans appreciate the storytelling and character development.