Exterminating a Second Grade radiant knight?
Some Mages might arrogantly think it possible if they hadn't had any contact with such an opponent. However, after several battles over the course of the invasion, and their multiple run-ins with the radiant knights, all of the First Grade Mages had long since given up on such impractical thoughts.
The Second Grade knights on this plane might be slightly weaker. However, when they slashed at enemies with their radiant runic longswords, even their most basic physical attacks were as powerful as 60 points of damage, when converted to the measurements used by Mages. Those ferocious knight battle techniques, on the other hand, could even reach a terrifying 120 points of damage.