Follow Your Passion: A Seamless Tumblr Journey
During the time Tanjirou spends in Butterfly Mansion healing from injuries, Nezuko ventures the estate area and stumbles around the other slayers. Most are understandably wary and cautious, some are nice and friendly, and there are those who glare at her in hatred.
(Short stories centring Nezuko hanging around other slayers and get more perspectives on what everyone is fighting for and understanding how complicated her status is as a demon among slayers)
So it's canon that animals can turn into demons with Chachamaru as a living proof, only that Muzan probably never thought of so/didn't think it's worth it
I am saying like. The concept is not canonly elaborated. We should exploit it of sort.
Tamayo and Yushiro are the only ones who figure out how to turn animals into demons. They could've built an army of demonized crowds with supernatural abilities. Demon dogs for extra protection. Find an animal, tame it, befriend, turn it into a demon and BOOM. An ally.
Demon Animals. Guys.
If time wasn't rushed and they made use of the discovery earlier, Tamayo and Yushiro can pose as thrice as threat for Muzan.
Remembering how Inosuke figured out Shinobu's death simply by looking at Kanao's expression made me think that he is more observant than I thought he is.
Can we talk about Inosuke probably can read body language like an expert because let's face it, living in the wild needs you to know the language of the animals' reaction so you could ensure your safety. And I wonder how much time he has spent with Kanao at the Butterfly estate before the infinity castle arc, since he seems to be able to grasp on Kanao's body language and expression so quick.
( angst aside, if this headcanon is true, then he knows some of his braven action creeps others out and he just straight up ignore them )