Board Thread:Editor Board/@comment-6697950-20130918115652/@comment-6697950-20130919131751

I've only seen クイーンズ・ナイトソード in the volume 10 raw. Though it should be "zu", not "su", since the kana is with a dakuten.

Anyway, haven't read Concerto yet, as only the first chapter is translated and because no one is doing Rondo, so I have no idea whether that's the quest that Kirito was referring to.