"Why do they do this?"
"They will cleanse the world of moth."
"Moth?" Ji Junmo was stunned.
"That's right, they are just moths to them, that is, us."
"How come?"
"This is their mission, and this is the mission they must complete."
"Is there no room for relaxation?"
"Can you keep people in the world under control? Can you keep people alive without causing destruction?"
"..."
"Can't."
"So, killing them all is our only way out."