Curious about Tanjiro’s age in Demon Slayer? Discover how old Tanjiro is and learn more about his journey as a demon hunter.

Tanjiro is a great example of a perfect character in an anime series. He is known for his diligent nature. After Muzan turned his life around and turned his sister into a demon, he promised to work hard and fight for humanity. On the quest to find a cure for his sister, he becomes part of the Demon Slayer Corps and takes part in numerous missions. Within four years of his journey he finally achieves his goal at the age of 17, and all of these experiences add up and become a part of him.
This article explores how Tanjiro’s age changes throughout the series, how it influences his development, and how it compares to the Hashira—the elite Demon Slayers. We’ll also discuss his fate and what ultimately becomes of him by the end of Demon Slayer.
Who Is Tanjiro Kamado in Demon Slayer?

Tanjiro Kamado is the protagonist of the series. Before the events of the series started, Tanjiro was a coal burner. After Muzan massacred his family and turned his sister Nezuko into a demon, Tanjiro set out on a journey to turn her back into a human. Eventually, he became a demon hunter and joined the Demon Slayer Corps.
Tanjiro is a very kind person and has been described by others as a compassionate person with gentle eyes. He is determined to achieve his goal of restoring his sister’s humanity and defeating Muzan for making him and others suffer for centuries.

Despite his compassionate side, he unleashes his bottled-up anger and feelings of vengeance when he battles. Seeing demons rampage without regard for human life enrages him. Tanjiro swore that he would be the one responsible for Muzan’s death. Regardless of this anger, he has a side where Tanjiro is able to empathize with anyone, including demons. This often leads him to be hesitant before beheading any demon he encounters. As time goes on and he gains experience as a demon slayer, Tanjiro is shown to be more mature about fighting and shifts his focus to bringing justice to the innocent civilians who have been wronged by the demons.
Tanjiro’s Age Throughout the Series

When Demon Slayer begins, Tanjiro is 13 years old. He lives a peaceful life in the mountains, supporting his family by selling charcoal. Muzan Kibutsuji shatters this peace by massacring his family and turning Nezuko into a demon, setting him on the path of a Demon Slayer.
Tanjiro goes under intense training under Sakonji Urokodaki for two years to be eligible to apply for the position of Demon Slayer. During this period, he does his best as he is pushed to his limits and is taught about swordsmanship and breathing techniques. By the time he takes the Final Selection exam to become a Demon Slayer, he is 15 years old.
By the time the Mugen Train Arc happens, Tanjiro has turned 16. This arc is significant in his development as he fights alongside the powerful Flame Hashira, Kyojuro Rengoku. The death of Rengoku deeply impacts Tanjiro, and the result is that he is more determined than ever to become stronger. Tanjiro is 17 years old during the final battle. His growth in power, experience, and willpower is evident as he faces the most dangerous enemy of all—Muzan Kibutsuji.
How Tanjiro’s Age Relates to His Character Development

Tanjiro’s growth is related to his development. When the story started, he was a mere 13-year-old innocent kid who did not know any better. By 17 he has faced unimaginable horrors, suffered deep losses, and gained wisdom beyond his years.
Over the years, Tanjiro’s physical abilities increase dramatically. His mastery of swordsmanship and breathing techniques allows him to fight against the strongest demons. The tragedies Tanjiro faces shape his emotional strength. Despite witnessing death and destruction, he never loses his empathy, which ultimately helps him defeat demons without hatred.
Comparing Tanjiro’s Age to Other Hashira

The Hashira are the highest-ranked warriors in the Demon Slayer Corps. Despite being younger than most of them, Tanjiro’s strength and potential allow him to stand alongside them.
Giyu Tomioka (19 at the start, 21 in the Final Arc) – The Water Hashira, who first encounters Tanjiro, is slightly older but recognizes his potential early on.
Kyojuro Rengoku (20 at the time of his death) – Despite being older and vastly experienced, Rengoku acknowledges Tanjiro’s spirit and strength.
Muichiro Tokito (14-15) – Surprisingly, Muichiro, the Mist Hashira, is younger than Tanjiro but is an undisputed prodigy.
Sanemi Shinazugawa (21) – One of the strongest Hashira, Sanemi initially doubts Tanjiro but later respects him after witnessing his resilience.
Gyomei Himejima (27) – The strongest Hashira, Gyomei, sees Tanjiro’s growth and determination as remarkable.
His fate in the series

During the final arc, Tanjiro succeeds in defeating Muzan, and the world is now free from demons. But this battle takes a severe toll on him. Tanjiro suffers critical injuries and is almost about to die. Muzan, trying his best to survive, transforms Tanjiro into a demon. It is due to Nezuko and his friends that he is able to hold on to his humanity before surrendering to his new demon nature.
After all of these events unfold, he is still left with permanent injuries. Tanjiro loses the use of one arm and an eye. Tanjiro retires from being a Demon Slayer and chooses to live a peaceful life alongside Nezuko and his friends. The series concludes with a glimpse into the future, showing that his bloodline continues, ensuring that his legacy continues.
Conclusion
Tanjiro’s journey in this series is intense. He is a little child who lost everything he ever knew at 13, becomes a demon slayer, and grows into a powerful 17-year-old hero. He’s got a strong sense of justice, the Hashira see his potential, and he proves kindness beats darkness. He’s an inspiring example of heart and strength winning.
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