"…" Sera's expression turned serious.
Asmodeus crossed his arms. "This is definitely bad for the frontline. First of all, the frontline should have known how many aliens slipped past them and expected a certain number to attack them from behind.
"But what if they send double or triple that number through this tunnel? They can either hit the frontline or the northern area. In the end, if the supply is cut off, the frontline can't last for a long time.
"In other words, they basically have a lot of options by having tunnels here." Asmodeus turned to Sera. "I know that you're exhausted after fighting for a whole day to reach the end of the tunnel, but we should go back and inform everyone about it. We have to somehow convince everyone to inform the related noble to conduct an investigation."
Sera nodded. "In that case, we should first go to Alavenya and Flora to get their help before heading to Nathan's side."