WARNING: The following contains spoilers for Demon Slayer: Kimetsu no Yaiba Season 2, Episode 9, "Infiltrating the Entertainment District," now streaming on Funimation, Hulu and Crunchyroll.
The second episode of Demon Slayer: Kimetsu no Yaiba's Entertainment District Arc has finally found its way to the titular town. Once Tengen Uzui, the self-proclaimed God of Festivals as well as the Sound Hashira, finishes wrangling the misbehaving trio of Tanjiro, Zenitsu and Inosuke, he finally explains why he's brought the boys into the heart of lust and greed. Tengen's botched "recruiting" of Naho and Aoi was explained by the claim that he needed girls for a mission, and despite taking along three dudes instead, it turns out the eccentric Hashira was telling the truth.
Once the boys adjust to the sensory overload of the Entertainment District, Tengen leads them to a Wisteria House. One of many such establishments in Japan, the Wisteria House offers Demon Slayers free supplies and safe harbor and appears to be the Hashira's base of operations for the time being. Despite being consistently pushed over the edge into an exasperated rage by anything anyone says, Tengen reminds everyone that he is still a Hashira, and he only came to the Entertainment District to hunt demons.
Tengen initially came here because this city of selfish desire and cruelty is the perfect place for a demon. Even people who go missing in the Entertainment District are assumed to have run away, meaning a demon could consume humans freely without raising suspicion. When the Sound Hashira initially arrived in the city posing as a customer, he could not find any information on possible demons. He then sent his wives undercover as prostitutes to various families' establishments, where they each ultimately went missing.
In order to find his wives, Tengen has decided to send in more undercover operatives to try and locate them. Considering this means sending more women to pose as prostitutes, it explains why he attempted to bring Naho and Aoi -- and why it's strange that he allowed Tanjiro, Inosuke and Zenitsu to join him instead. Sloppily disguising the boys as girls, it's unclear if Tengen's inarguably bad plan is a result of his eccentric personality or from concern for the safety of his wives. After all, sending people undercover to search for people who went missing while undercover feels highly likely to yield the same result.
Tanjiro, Inosuke and Zenitsu will have to work quickly before they're revealed to be very obviously not girls. To their credit, Tanjiro and Inosuke have already caught wind of two of Tengen's wives, resulting in leads to investigate, but their inability to behave like girls threatens to get them caught before they can accomplish anything. Considering Tengen knocked Zenitsu and Inosuke out cold for being skeptical of his wives and whether they may still be alive, the Sound Hashira likely won't be happy if any of the boys get themselves caught without having located the missing women.
Considering he suspects the demon lurking in the Entertainment District to be an Upper-Rank, Tengen Uzui just might be in over his head. Muzan's most elite demons are nothing to scoff at, and Tengen could have up to seven people to protect by himself, counting the boys, Nezuko, and any of his wives they may find. Episode 9 ends with the reveal that at least one of Tengen's wives, Makio, is still alive, but being held hostage by the very demon he is hunting. Given Tengen's history of erratic outbursts over the slightest comment, he may well lose his composure with deadly consequences if anything were to happen to one of his brides as Demon Slayer continues.
