Tengen Uzui, recognized as the Sound Hashira in *Demon Slayer*, played a pivotal role in the acclaimed Entertainment District arc. Following the appearances of Giyu Tomioka in Season 1 and Kyujuro Rengoku during the *Mugen Train* saga, Tengen marked a significant return of the Hashira in the series.
Often characterized by his flamboyance, Uzui was also known for making impulsive choices. A critical decision during the Entertainment District arc could have led to disastrous consequences for him and the overall storyline. If Tengen had taken Aoi and Naho along with him, it might have resulted in his untimely demise, dramatically altering the narrative. Here’s a speculative analysis of the potential repercussions stemming from such a choice.
Note: This article represents the author’s perspective and includes potential spoilers from both the anime and manga.
The Critical Decision Tengen Uzui Nearly Made

In the opening episode of the *Entertainment District* arc, audiences are introduced to Tengen Uzui. Responding to reports of demonic disturbances in the Entertainment District—a location exclusively inhabited by females—Tengen was tasked with a potentially perilous investigation.
This situation prompted Uzui to take Aoi and Naho from the Butterfly Mansion. His initial plan to “recruit”them was swiftly interrupted by Kanao, Kiyo, and Sumi, who insisted on stopping him. At a critical moment, Tanjiro also arrived, leading to Tengen reconsidering his choice upon discovering that Naho was not part of the Corps. Ultimately, he chose to take only Aoi with him.
However, imagine a scenario in which Tanjiro had not intervened, or Uzui had ignored Tanjiro’s request to bring a different team along. Had Tengen taken Aoi into the dangerous environment of the Entertainment District, the consequences could have been severe.

Initially, there was no intel suggesting the presence of an Upper Moon demon in the area, only vague reports of demonic activity. As the series reveals, Upper Moon entities are among the strongest foes, often too formidable for a solitary Hashira to confront. Given Aoi’s lack of battle experience, she would not have significantly contributed to Tamken’s success in this difficult encounter.
Compounding this problem, later revelations in the arc show that Tengen would have faced not just one but two Upper Moon demons—Gyutaro and Daki. Both were notorious for having dispatched several Hashira in previous confrontations, making Tengen’s solo encounter with them likely fatal.
How Tanjiro’s Intervention Was Crucial for Uzui’s Survival
Tanjiro’s involvement was undoubtedly a lifesaver for Tengen. During intense battles against the Upper Moon Six demons, the simultaneous beheading of both adversaries was imperative for victory. This was only achievable because Tanjiro assisted Uzui in dispatching Gyutaro while Zenitsu and Inosuke tackled Daki, a feat that would have been insurmountable for Tengen alone.
Additionally, Nezuko’s support was essential in saving Uzui from the lethal effects of Gyutaro’s poison. Her unique Blood Demon Art enabled her to ignite her blood, effectively nullifying demon-related threats. Thus, her timely intervention preserved Uzui’s life during one of his most perilous moments.
Conclusion
Had Tanjiro not stepped in, Tengen Uzui’s critical misjudgment might have drastically transformed the storyline of the *Entertainment District* arc. Despite sustaining severe injuries, Tengen survived and continued his journey, later taking on a mentor role within the *Demon Slayer* series.
The *Entertainment District* arc stands out as one of the most compelling segments of the series, showcasing intense Upper-Rank battles, stunning visuals, an engaging storyline, and exhilarating fight sequences that contributed to its immense popularity. As fans eagerly anticipate the unfolding of the final Infinity Castle arc, the excitement continues to build within the *Demon Slayer* community.