Infinity Castle's One Big Misstep

Warning: Major spoilers for the Demon Slayer: Infinity Castle film!!

The Demon Slayer: Infinity Castle movie has been praised for its stunning animation, emotional weight, and high-stakes fights. As the first part of a multi-film adaptation, it delivered exactly what fans wanted, with fast-paced battles, heartbreaking moments, and the sense that the final act of the series has truly begun. For much of its runtime, it felt flawless.

But one major decision held the film back from reaching perfection. Despite her importance to both the story and fans, Shinobu Kocho’s death was handled in a way that left many viewers unsatisfied. Instead of feeling like a dramatic highlight, her exit came far too quickly, robbing her character of the time she deserved.

Shinobu’s Death in Infinity Castle Felt Rushed

Shinobu Kocho charging at Doma using her Nichirin Sword

Shinobu’s fight with Doma, one of the most terrifying Upper Moons, had the potential to be one of the movie’s crown jewels. Instead, it unfolded and ended within the film’s first 30 to 40 minutes. For a runtime stretching to two and a half hours, her passing came alarmingly early, leaving audiences stunned, but not necessarily in the best way.

Part of the issue is pacing. By placing Shinobu’s death so close to the start, the film did not allow enough buildup for viewers to emotionally prepare. Her battle was beautifully animated and memorable, but the swiftness of her defeat meant her sacrifice lacked the gravity it deserved. Fans who cherished her presence were left feeling shortchanged.

As a Hashira, Shinobu has been one of the series’ most complex characters, carrying both a gentle demeanor and a hidden rage born from tragedy. To see her go out so early without more time in the spotlight made her role feel smaller than it truly was, especially for a character so beloved.

Why Shinobu’s Death Matters for the Rest of the Arc

Shinobu and Tanjiro atop the Butterfly Mansion in Demon Slayer season 1

Of course, Infinity Castle is not a standalone story. More films will follow, and Shinobu’s death will play a significant role in shaping the battles to come. Her sacrifice against Doma sets up a devastating chain of events that other characters will carry forward, ensuring her spirit is not forgotten.

Still, that does not excuse the execution. While future Demon Slayer installments will likely expand on her impact, viewers only get one chance to experience her final moments on screen for the first time. The early placement meant her emotional arc did not resonate as powerfully as it could have if delayed or given more focus.

Ultimately, Shinobu’s early death highlights a difficult challenge in adapting a massive arc like Infinity Castle. Balancing the needs of pacing, character importance, and emotional weight is no easy task. Yet with all the care Ufotable puts into this franchise, many fans had hoped Shinobu would receive more spotlight before her tragic farewell.