blocks an arrow

But at that moment, a hole appeared in the golden tsunami from whence a golden
arrowhead lunged with terrifying speed.
“...!?”
Though he wanted to dodge it, Kamijou was backing away and couldn’t obtain balance
under such a situation. He could only choose to use his right hand to grab that attack
that was flying at him.
The sound of muscles ripping could be heard in his hand.
The golden arrowhead wasn’t so easily caught. It backed away and returned back to the
golden storm. The palm that got cut felt hot, like it got scalded on a hot metal plate.
After a while, the golden tsunami started to rise.
Kamijou jumped backwards and then rolled away, before finally avoiding that scalding
molten metal attack.
The golden sea separated Kamijou and Aureolus Dummy, and the width was about three
meters.
(...Damn it, I don’t have... any feeling in my hand—!)
Kamijou gritted his teeth. It was hard for him to clench his five fingers on the right hand.
The right hand that could negate any miracle couldn’t even deal with a small knife.
“...What... what’s going on?”
But after the tsunami of gold subsided, Aureolus Dummy, who appeared again, seemed
to be more anxious that Kamijou. One could even say that he was more than confused
now.

The golden arrowhead in Aureolus Dummy’s hand started to disintegrate like it was
made of sand.
The Imagine Breaker of Kamijou’s right hand started to work.
That arrowhead should be something that was imbued with some supernatural power,
so it had gotten destroyed after Kamijou’s hand had touched it. The wound on Kamijou’s
hand was caused by the blade just before it got destroyed.

- Toaru Majutsu no Index Volume 2, Chapter 2 Part 7