Even though Oriole and the rest planned on finding this place first, it was hard to summon the two masters from inside a battle to save a stranger. Alexie was not a part of Runera, and the two powerful monsters wouldn't hand over these ruins for the sake of saving him.
"Therefore," continued Julia as she pointed up there, "we can tell them that the mastermind behind the attack is there. Grandmaster Casca's... murderer is also there."
Oriole had heard about this tragedy from the knights outside the ruins, but he didn't believe that a reverse family member could die. Furthermore, it was none other than the head which dealt a heavy blow to the rest.
"Runemasters are logical before anything else. Even if we tell them that the murderer is here, they will choose to salvage what is left over to pursue vengeance," interjected Maryam. "We need to do this on our own."