Paul said something like, "My keen insight noticed this sword’s ability."
However, I know it.
This ability was the same mentioned as a warrior’s weapon in the [Legend of Perugius] that I read in Buina village.
That, although the warrior’s sword can't even cut through dried meat, when matched against a clump of steel it easily slices it in half; it's a demon sword.
There's no doubt. It caught Paul's attention at the "can’t even cut dried meat" part.