"Last repeat of the orders!" General Gara shouted with amplified magic. "The Isolation Barriers are opening. Your Majesty had graciously granted all of you 10 Minutes to get the hell out of here and fight! Once the gates are open, you are to invade and secure the 5km perimeter north of this barrier."
"Upon doing so, the king will then put up a secondary isolation barrier and you all will clear what was inside of that barrier." Gara continued. It sounded simple but everyone knew the risks that might incurred from this.
Before this operation, Jin had insisted on several simulations of it through a dungeon portal. Instead of using demons, the use of overwhelming S Rank monsters to fight against them was effective in showing them how the demons might possibly react. After all, Jin believed that there were power differences despite being in the same rank.