His gaze once again fixed on the six keys.
So just based on this one condition, among the six keys in front of him, only two were left that met the requirement.
But the problem was, there was a second point.
Because besides the vault gate itself being extremely sturdy, it was also reinforced with multiple complex Arrays, so in order not to obstruct the conduction of Magic Energy when unlocking, the keys were made almost entirely of mithril.
Mithril was an extremely special metal.
Aside from its excellent Magic-conducting properties, unlike silver, mithril had an extremely bright silvery metallic sheen on its surface, making it easy to distinguish from ordinary silver at a glance.
And if he added this second characteristic, then all six keys in front of him were wiped out.
Not a single one fit!
'Could it be that the Hernet Family's vault gate is special, or that the keys have been modified somehow?' Raine pondered.
