Well, that is some weak conviction from the king like Moldias. I mean, c'mon! The readers knew that the nobles to going to do anything in order to crush Hiroto, and something tells me that Belphegor isn't a type of noble to accept defeat easily. And frankly, Hiroto did more for Hybride than all the nobles from every region combined, at this point. It almost as if the nobles didn't want to being overshadowed by a stranger from the other world. Lets ask ourselves here, what were the nobles doing while Hiroto did everything to improve Salabria?