It was the sound of a piece of dimensional wreckage created by Curtana Original.
Carissa had kicked the 3 meter long sharp stake. It came roaring directly towards Villian’s face, but it did not hit her.
Knight Leader had suddenly cut in from the side and punched the 3 meter stake away with his right fist.
With a loud impact, blood shot from between his fingers.
But Knight Leader’s expression did not change.

Toaru Majutsu no Index vol.18 ch.7 pt.7