If demons become stronger by human blood than would human blood rushing through their veins also make them stronger? Would explain why Ameri is so strong
Well, they are demons after all. There doesn't exist a single hero bone in their body. Baal acted because it was scripted and iruma because he's human. The others are straight up demons, the three greats had their grandsons present so checking them before moving would be their reaction. And it...
Ameri and her dad in the border control also know. I am also pretty sure others know/have a good hunch, like Azz mom and Kalego. Knowing Sulivan and Opera, they definitely want to leave disclosing the fact Iruma is human to Iruma. But if someone (Kalego) were to ask them if Iruma is human...