The Demon Slayer Infinity Castle Arc trilogy is a couple of months away and the arc has been built up to be the series' biggest yet. Considering the importance of the upcoming battle to the story, Ufotable elected to turn this arc into a trilogy of movies. Each movie is slated to cover important showdowns between the Upper Moon Demons and the Hashira before culminating in a fight against Muzan.
Amidst the excitement for the Demon Slayer Infinity Castle Arc trilogy, it is worth noting that Nezuko is integral to Ufotable's trilogy approach. After all, the series began with her becoming a Demon and Tanjiro's journey to revert her to a human. Though, in the manga, she doesn't appear until the final bit, her role in no way diminishes in significance and now it might see some change as well.
Disclaimer: This article is speculative in nature and reflects the opinions of the author.
Demon Slayer Infinity Castle Arc trilogy might highlight how important Nezuko is to Ufotable

As mentioned, Nezuko is a key part of Ufotable's Demon Slayer Infinity Castle Arc trilogy approach. After all, Koyoharu Gotoge's series began as a result of her becoming a Demon and her brother's journey to turn her back into a human. As such, the pair of siblings walked a tumultuous path which ultimately pitted them against the original Demon, Muzan Kibutsuji.
Thus, the final arc stands as the series' most vital, most violent, and most important. It essentially decides the future of the Demon Slayer world. Now, Nezuko steps in here as the story's most merchandise-heavy name. But, the issue with the Demon Slayer Infinity Castle Arc trilogy is that Nezuko is absent for the most bit, appearing only in the Sunrise Countdown Arc.
She essentially plays no role in the Hashira vs Upper Moons fights. Following the Hashira Training Arc, Nezuko took Tamayo's medicine and was under Urokodaki's care. Thus, she was in a comatose-like state. Given this sequence of events, there is a likelihood of Ufotable using the Demon Slayer Infinity Castle Arc trilogy to add film-only scenes to enhance her role a little.

This could be in the form of additional scenes featuring Nezuko in the outside world, or even an extra battle scene for her. As such, it could showcase the likes of Tengen and his wives, Senjuro (speculated), and Urokodaki, considering they are the ones left outside. In a nutshell, it wouldn't be a terrible choice to attempt to elevate Nezuko's role further in the story, expanding on the source material.
If this is done, it will definitely affect the Demon Slayer Infinity Castle Arc trilogy's pacing. Presently, the first and second movies are slated to cover five important fights between the Hashira and the Upper Moon Demons. Adding in a Nezuko fight could change that and/or increase the duration of one of the films (wherever it is added), yet be a fantastic choice for both narrative and commercial reasons.
Nezuko's importance to the emotional core of Tanjiro’s journey cannot be stressed enough. Thus, expanding her role in the Infinity Castle Arc movies will offer a more balanced payoff to her story, reinforcing her growth and the impact of Tamayo’s medicine. It would also give fans the unique opportunity to witness character interactions among Urokodaki, Senjuro, etc.
Furthermore, as mentioned, Nezuko is one of Demon Slayer's most recognizable and marketable characters. Additional sequences or unique battle scenes can elevate the Demon Slayer Infinity Castle Arc trilogy's appeal and ensure fan engagement while also showing off her abilities. Pace adjustment concerns are valid, but Ufotable has a knack for cinematic storytelling with minimal disruption.
Conclusion

To conclude, incorporating additional Nezuko-focused content in the Demon Slayer Infinity Castle Arc trilogy would be a compelling decision from both a narrative and commercial perspective.
Expanding on her role would provide a more satisfying conclusion to her arc, thus reinforcing the emotional weight of her transformation. Further, it would allow for meaningful interactions between other names like Urokodaki and Tengen, thereby enriching the story even more.
Again, Nezuko’s immense popularity and marketability make her invaluable to the franchise. Extra scenes or an original battle would boost fan engagement as well as display her unique abilities in a high-stakes setting. Pacing adjustments will definitely be needed, but Ufotable’s expertise ensures that any changes will probably be handled seamlessly.
All in all, building on Nezuko’s role will adhere to the Demon Slayer spirit whilst delivering a more fulfilling watch.
Related links:
- 10 best anime movies to watch while waiting for the Demon Slayer Infinity Castle Arc trilogy
- Demon Slayer: Why a movie trilogy for the Infinity Castle Arc was the best move by Ufotable, explained
- Why Zenitsu vs Kaigaku, not Muzan vs Tanjiro, will be the Demon Slayer movie trilogy's best fight