A single arrow was piercing the old man’s side.

But it was not made of metal or wood. It looked like muddy-colored wax. The tip branched out into five twisted prongs. Almost like a hand trying to grab at something…

“The arrowhead is made of bone, the feathers are made of leather, and the shaft is made of wax. …But not just any wax; the grave wax created from flesh and blood.”

In other words…

“Imagine Breaker. The ultimate exorcising spiritual item created from a certain Saint’s right hand. It was originally the most secret of weapons meant to drive an uncontrolled being back beyond the magic circle after a failed summoning.”

Toaru Majutsu no Index New Testament vol.18 ch.3 pt.13