The next few hours had been a real test of patience, but Billy endured since the rulers didn't get too close to attacking the barrier. Also, because his friends managed to fight and defeat the enemies' champions. Even though they were supposed to be at the level of the reincarnated at that world with their innate skills and other powers at a decent level.
At night, Billy talked with the leaders of the armies, and they told him about their total losses. They started the battle with around two hundred thousand people that could fight, and around thirty thousand died on the first day… the attack of the invisible enemies sure was a pain, even though Billy distributed magic items to help find them.
"There isn't much more than you can do," the death spirit said. "When Uvish had to deal with invasions of a single army, around the same amount of people died every day."