User blog comment:B214/Shin DxD 1 discussion/@comment-32252462-20180910183143/@comment-33359929-20180910205709

You just answered your own question. The unnamed katanas are UNNAMED. THE CLUE'S IN THE TITLE.

And the ethereal katanas must be harder to produce, far too hard to mass produce for the Vatican/Heaven

But since you've sucked all the Kool Aid out of Heaven's metaphorical dick, I'm sure you can find some terrible way to think that Heaven could mass produce weapons we've seen only two of, rather than the LOADS of light-swords we've seen the grunts use.