Webto answer in short, genya is not a demon in demon slayer. He just has a very peculiar body composition and a unique trait. Genya shinazugawa from demon. Webthe reason for this outburst was because of genya's ability to eat demons, which temporarily grants him their attributes and abilities. Webwhy does genya eat demons? He consumes demon flesh because it allows him to temporarily gain that demon’s abilities despite being a human. This is a power. Webgenya shinazugawa's transformation in demon slayer allows him to fight demons on even terms, as he borrows their traits and strengths. Webbasically, as a result of his serious gnashers and iron stomach, genya can devour demon flesh and gain characteristics like the sharpened fangs, frosted tips, and. Webwhile genya's gun and repetitive action are unique abilities, he truly stands out in his ability to temporarily become a demon. By consuming the flesh of a demon,. Webit was never stated in the main story, but in the second demon slayer fanbook it was stated that genya had strong biting strength and special digestive organs which allowed him. Webit's just an extremely rare genetic ability he's lucky enough to have. How did genya get his demon eating abilities where if he eats flesh of a demon he will gain some of thier.