Why are people so fixated on the carrot. It was not the ultimate outcome of this exercise. Iruma is just proving that Many Ears can do special things outside of their ears that others value more than they do themselves.
Iruma is waking them up from their inferiority complex, not making the...
Its not a matter of "If". Iruma opened "a" door - not "the" door to Nova and the Many ears. It's not just a singular outcome. Iruma just showed them they are more than just their ears and can do wonders with enough effort and care.
Looks like horns since ive been trying to find the ear grooves but couldnt spot it. Might be a trick tho. Itd be interesting if Nova really is parallel to Dokfel and Iruma to Delkira.
Then again, i believe if a past demon king came from many ears tribe theyd be regarded at a higher stature.
Remember the art club member who was taken aback by the compliment for the battler poster in last chapter? I feel like Sylvia might be connected to that/person