User blog comment:B214/Volume 17 spoilers./@comment-24.2.168.254-20140220012350/@comment-1359322-20140220095347

I was just saying that the reason why Ddraig said forbidden with such a low tone is because to him the Longinus Smasher reminded him of the Juggernaut Drive (which is in fact forbidden) that reminded him of how he became known as Oppai Dragon.