After returning to the camp, Qin Ruo finally had gotten Edgar's explanation for the dismantling of the safe zone's barrier.
According to Edgar, the three NPCs were now not in "neutral" ground with anyone in the Underworld anymore. This was due to the Fallen Angels aiding them in defeating the Grand Reaper that had been threatening their lives for decades. Therefore, Edgar and his friends had decided to pledge their allegiance to the Fallen Angels League.
In other words, Edgar and his NPC colleagues had decided to be the Fallen Angels' city's Advisors. Qin Ruo didn't understand what Edgar's "Advisor" meant; however, having Demigod NPCs joining the Fallen Angels was always a good thing to Qin Ruo.
Besides, Qin Ruo had always wanted Yaegar to join his League as his Alchemist.