Imperial City...
The invasion was mostly focused on the district of the city that contained the Imperial Palace and that was a very bold move but then again, one does not attempt to gain knowledge of the strength of a continent ruler without being bold... Bold to the point of being foolish and death-seeking.
The scene in the Imperial Palace district was very much like that of the Silva Duchy but here, the attacks seemed much more focused... Nowhere else was attacked...
Whatever other building was around the palace and got caught up in the attacks was resided in by only the Harons and no other families. This territory as well as the large majority of the Imperial City belonged to the Harons.
When the monsters were let out of the portal and all attacked the Imperial Palace, they were mostly distractions while the actual experts prepared powerful attacks to draw out the Haron Emperor.