Even though the four Neo-Demons were hurt and their energy pools were low, they did not stop hunting down and killing the members of the Heavenly race inside the city.
They have already killed the strongest of the members of the Heavenly race and leveled the city to the ground, but some of the weaker ones remained alive, hiding.
Although they were not a threat to any of the Neo-Demons. Since Zatiel had commanded to kill every member of the Heavenly race, that was exactly what they would do.
Some of the Angels were trying to communicate with the exterior and ask for help, but unfortunately for them, the explosion of the Fiendfire runes had made the surroundings filled with very destructive energy.
The massacre continued and all the Rank 1 Angels hiding were tracked down and killed, increasing the number of dead bodies on the ground.