Arrowhead Dodge

With a motion like a snake slithering out of a hole, a golden blade leaped forth from the
right sleeve of Aureolus’s suit.
(An arrowhead...?)
Stiyl furrowed his brow. It was certainly shaped like an arrowhead, but it was as big as a
smallish knife. The moment he concluded that it was a hidden weapon made for
throwing...
“Limen—”
Aureolus’s right hand swung upward. The edge of the blade stared Stiyl in the face like a
viper raising its head.
“—Magna!!”
Instantly, the thing shot out to attack Stiyl, flying straight as a bullet, aimed right at his
eyeballs.
“...!?”
The only reason he was able to instantly twist his body and avoid it was that he had
guessed it was a throwing weapon but a moment prior. Had he thought it was just a
knife, it would have pierced his skull.
Likewise, a golden chain was attached to the tail of the giant arrowhead.
As he swiveled, he looked at where the knife, now more like a giant golden snake, was
headed. The chain was coming out of Aureolus’s suit sleeve, cutting through the air, and
passing right by Stiyl’s face.
With the sound of fruit being sliced open, the tip of the arrowhead stabbed into the back
of one of the fallen students.
...
Before Stiyl could think of something...
(...!?)
As if he had thrust the knife into a water balloon, the student’s body turned into fluid
and exploded.

- Toaru Majutsu no Index Volume 2, Chapter 2 Part 6