Basically, Iguro wears the muzzle because he's the demon but on the good side, so he's like Nezuko because this is a completely different au. And Tomioka is like Tanjiro, so you know the drill. But if you're mentally stupid, here it is. I'll explain. So Tomioka is like Tanjiro. He's the demon slayer water breather since this is a completely different au. Iguro is 4'11" and 16, and Tomioka is 5'3" and 18. Yas, Iguro was just born short- 💀