Word spread quickly within the Demon Continent after William and his forces decimated the Orkish Clan, which was considered as the Gremory Clan's right hand Clan.
If one were to ask all the Clans in the Demon Realm if there was a Clan that they hated the most, more than half of them would say that the Orkish Clan would win the 'Most Hated Clan' Award in their entire Continent.
They were a savage Clan that could no longer be called Demons, because they were literally Monsters that had mutated due to their bloodline ability to consume the flesh and blood of their victims.
William didn't bat an eye and demolished their entire city, killing as many as he could. When the Orkish Clan saw William's declaration to attack any Clan that had close ties with the Gremory Clan, they just laughed at him.