“That Spell of Thororm that you use can target any one of the weapons that you are aware of and make it useless for 10 minutes. Could you not destroy Curtana Original by using that?”

“You fool. Everything has exceptions. And any knight that kept an ability sufficient to surely kill his head of state would be guilty of lèse majesté. To demonstrate my loyalty, I made sure the theory behind the spell was constructed so that it could not be used to kill someone in the royal family.”

Toaru Majutsu no Index vol.18 ch.6 pt.11