Responses
Kirio doesn't know that Iruma was a human aside from the Principal and his assistant only Balac-sensei and the school president's father knows him being a human
thats exactly why this theory will be good, the ani-san of kirio already knows iruma is a human by investigation, so kirio wiill usa that some time
I think Kirio will see Iruma's despair face definitely he might turn his friends against him or expose that he is a human