Thread:NewGenTV/@comment-3006074-20150831020154/@comment-5916303-20150831023122

You're on a wiki that literally revolves around Akame ga Kill! and yet somehow you're not aware that it's a manga that later got an anime adaption?

It's a calque. Teigu has been used as a loan word to refer to these relics and in these cases, romanization doesn't always have to be directly translated. For this, you can look up various Japanese weaponry across history, where we simply retain their original names.