Infinite Castle and overshadow Tanjiro – Portal N10

The launch of Demon Slayer: Infinite Castle consolidated the franchise as the biggest phenomenon in Japanese entertainment in 2025. The film surpassed the most watched Japanese film in historybreaking the record of Mugen Train and bringing millions to theaters around the world.

The success not only came from the renowned animation from the Ufotable studio, but also from the way the secondary characters stole the spotlight, especially Zenitsu e Akazawhich overshadowed Tanjiro’s protagonism in this new phase.

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Since its first appearance in Kimetsu no Yaiba, Zenitsu Agatsuma aroused public curiosity. Always portrayed as fearful and incapable of facing enemies head-on, his victories came in an unconscious state, which made many wonder how far his evolution as a demon hunter would go.

Em Infinite Castlethis turning point happens. For the first time, Zenitsu remains awake and firm in the face of threats from the castle. With a serious face, far from his panic attacks, he demonstrates maturity and reveals that he is looking for something bigger: a personal reckoning against Kaigakuhis former rival and now an Upper Moon.

The fight is one of the highlights of the film. Zenitsu leaves behind his limitation of only mastering the first form of Thunder Breathing and creates an unprecedented technique: the seventh form, the god of Flaming Thunder. This transformation not only surprises viewers, but symbolizes the character’s maturation, as he finally finds his identity as a swordsman.

The moment gains even more impact with Ufotable’s impeccable visual direction: accelerated camera cuts, grand soundtrack and electric lighting that reinforces the weight of the battle. For many fans, this was the moment in which Zenitsu stopped being a supporting character to become one of the most powerful hunters in the history of the Corporation.

Furthermore, the victory against Kaigaku consolidates the possibility of Zenitsu being recognized as Hashiraan elite position reserved only for the strongest. The symbolic reunion with his grandfather, imagined by the character at the end of the confrontation, sets the emotional tone of closing a cycle: from insecure apprentice to warrior ready to lead.

Akaza and the redemption of an antagonist

If Zenitsu was the revelation among the hunters, the highlight among the demons fell to AkazaUpper Moon Three. His participation became the heart of the feature film.

During the fight against Tanjiro and Giyu, Akaza proves his devastating strength by resisting even being decapitated, regenerating at impressive speed. But what really marks the character are the flashbacks of your human lifewhich reveal a past full of injustice and pain.

The audience learns that Akaza was a man who lost everything he loved, including a fiancee who offered him unconditional love. Unable to deal with the loss and overcome by a thirst for revenge, he agreed to transform into a demon. This tragic context places him as one of the most human villains in the series, making it impossible not to feel empathy for the character.

At the climax, Akaza makes an unexpected choice: accept your defeat and causes fatal injuries to himself to end the cycle of violence. He recognizes that he no longer needs to kill and that he can finally be reunited with his loved ones in death. This willful self-destruction gives the film a rare emotional charge, bringing many fans to tears.

Tanjiro in the background

Although Train Currently Technology continues to be the guiding thread of the narrative, in Infinite Castle he ends up eclipsed by Zenitsu’s brilliance and Akaza’s depth. Its standout moments exist, but the dramatic strength of the work lies precisely in the two characters who take on the emotional lead in the film.

This change of focus does not diminish Tanjiro, but expands the dimension of the story, showing that Kimetsu no Yaiba goes far beyond the main hero. The film proves that the franchise can grow when it invests in secondary characters, transforming them into pillars of emotion and action.

The legacy of Infinite Castle

With box office records, Demon Slayer: Infinite Castle has already gone down in history as a watershed moment in the genre. The film reaffirms the talent of the Ufotable studio in combining visual spectacle and emotional depth.

More than that, it enshrines Zenitsu as a hero worthy of the Hashiras and transform Akaza in one of the anime’s most memorable villainsthanks to his humanity and the way he found redemption.

The result is a narrative that goes beyond the simple fight between hunters and demons. It’s about growth, loss, revenge, and most of all, finding purpose in the midst of pain.

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