"A barrier? How?" The question was asked by one, but felt by everyone after they heard from Isaac about creating a barrier before the mainland to ensure that if the other side strikes again, they would know.
They were saved by the soothsayer this time, but not every time someone would predict that the demonic forces would be ambushing the human realm.
As such, "A floating town before the mainland, houses made on water, their pillars going down to the surface of the sea. And in those houses, there would be soldiers who would keep a lookout and also inform us if they spot any suspicious movements."
The idea sounded plausible but dangerous. To cover such a vast area, hundreds of soldiers would be required, who would always be in the red zone. They would be the first target of the demons if they really decided to attack again.
