Magic Curtain. If you play bullet hells, you might be familiar with the term, since they're called "danmaku" in Japanese, which means "barrage", and literally translates to "bullet curtain".
Such a troll.
Arguing against different philosophies for training magic and both saying their version is the only right one. Seems like any other argument on the Internet.
The DPS explanation seems needlessly complex.
I was wondering why he wouldn't call it a "volley", or the Japanese equivalent, like "a volley of arrows." That world has physical fighters and archers, so even if they don't have modern artillery, they should have a word equivalent to "volley."
Also, if no artillery exists, that means no catapults or ballistas? I guess it makes sense if they can't use their abilities for them, but like how the crossbow and gun made any untrained man, woman, and child a lethal threat, it only makes sense that artillery would exist too.
Last Nitpick: The word is "Fatality" if it means death. "Causality" just means missing, harmed, or worse; so "casualty" includes those who are injured.