Avery and Percival were on top of a tall building opposite from the terrorist's direction of attacks. The stationed soldiers here were thin and most of them were just helping to find more civilians to bring them to the shelter.
These soldiers were also hurrying as they could see that cracks were starting to appear from the barrier activated to protect the whole city. They know how precarious their situation was.
"Die!"
Avery waved her hands as a flood of red liquid started to gush out from the grimoire. Percival watched the liquid as it started to cover him from all directions.
'Good! Be arrogant about your tough defense... Think of it as a weak corrosive magic spell that you can easily break through anytime you want! Your own pride will kill you!'