Facing Ronald's inquiry, Raphael simply explained:
"This Array is quite complex in its composition. The person who could come up with such a feat must be an experienced Caster who has dedicated years to study and research."
"And look at how it's dissipating now."
"This is a very secure defense mechanism, designed so that the Array can self-destruct without leaving any traces, either after its effects end or if it is tampered with."
"If it goes this far, even the investigation bureau's teams wouldn't be able to find any trace of his Spell here."
"..."
Listening to Raphael's explanation, Ronald pondered for a few seconds, then proactively handed over the stone he was holding:
"This was the Core Technique at the center of the Array."
"Can you make anything out of it?"
"..."
Taking the stone from Ronald, Raphael looked at the object and frowned.
He couldn't immediately recognize its origin.