If your talking about if they find out about him being human I feel like some of them won't accept it and there will be a scene or chapter of them slowly accepting it worse case is that Iruma or that person will be in danger
But for Kaligo after the scene with all the teachers saying they're guardians I feel like even after finding out he'll still protect iruma but I'm not too sure about accepting him
Maybe they would struggle with it, but I feel like they come around in the end.
I feel like Asmodeus, Clara, and Kalego will be told (hopefully by Iruma/Grandpa, and not Kirio and his crew).
However, I feel like the closer Iruma grows to his classmates, the likelihood of them being told increases. Especially in the case of Purson and Lied. Selfishly, I like the idea of all of his friends knowing, accepting, and supporting Iruma as a human.
Does anyone have a conflicting theory? ┑(￣Д ￣)┍