The demon invasion brought overwhelming fear and uncertainty to everyone on the human continent, and even though the higher echelons tried their best to calm the common folks, not telling them about their inability to do anything about the barrier.
But it didn't take long for the news of the restrictions the barriers posed to spread among the people, and after hearing about the failed attempts to breach the barrier by the imperial forces, it only fanned the flames of dread and helplessness.
The Human Empire and any mighty power were gripped with panic and uncertainty, knowing that demons coming through the portals were mere scouts or cannon fodder and the true demon army was yet to arrive.
All major powers deployed their best troops and weapons, but their options were severely limited, with the barrier preventing anyone stronger than Fifth Rank from entering.