NA Localization:
"Know the demon's ways to annihilate demons... I see, that's not a bad idea."
"I didn't expect an outfit like that to exist in this age... Brings back memories."
"Seriously? I'm in the oni get-up?"
A peculiar trio that was formed in at by the demand of a particular passionate group of people in Chaldea. As a side note, First Unit Captain bribed Vice Commander into participating with takuan pickles.
Fan Translation:
"To fight evil, you must know evil……
Is what they say, I see, it's not so bad."
"This kind of costume exists in the present days too, huh… Sure makes me feel nostalgic."
"Seriously. Why do I get the oni's costume?"
A monster group made real due to popular demands from a portion of Chaldea.
On that note, it seems that the vice commander has been pressured into this by the Captain of the First Unit, using pickled daikon radish.