God Breaker Downside

Power of God rolled its eyeballs. It got careless and cut the steel wires, causing
the water wings to slow down. Of course, Kanzaki Kaori wouldn't let that tenth
of a second gap off. She raised her nodachi horizontally and quickly dashed
forward—

—But at that moment, Kanzaki's legs lost their balance.

(...?)

The angel used that time to readjust its attacks and swung out three consecutive
water wings attacks, but Kanzaki still managed to slice them with terrifying
speed and accuracy. But at that moment, Power of God realized something.

Kanzaki Kaori was sweating as if she had a fever.

Even though the God Breaker ability existed, it didn't mean that anyone could
use it. Besides the issue of talent, the more important point was the huge burden
this spell exerted on the human body.

Actually, Kanzaki didn't really have a soft spot for Battojutsu.

It was just that if the spells she used couldn't decide the victor immediately, the
huge burden would wreck her body.

The angel continued to attack mercilessly with the water wings as it stared at
Kanzaki's face. Kanzaki was definitely moving far more than a normal human
could, but not only was her face not turning red, it looked extremely pale as if it
had been soaked in ice water. The hand that was holding onto the hilt of the
nodachi was trembling.

The price of overworking had already started to wear Kanzaki's body down.

Power of God continued to swing the water wings as the effects of this battle of
attrition were finally showing. If it kept the battle going, Kanzaki would wear
herself out. Under the fast and slow attacks of the Power of God, Kanzaki's body
finally started to waver.

The blue angel ordered the water wings behind it, intending to deal Kanzaki the
final blow.

But Kanzaki stared at the Power of God with such sharpness in her eyes.

"...TOO SLOW!"

What was supposed to be the last water wing released by the angel was hacked
in half by Kanzaki.

The continuous movements that were beyond an ordinary human body's
capabilities caused Kanzaki's body temperature to rise abnormally, her blood
flow was pulsating crazily, she was severely lacking oxygen, and her muscles
and bones were creaking. That pain went beyond the fever; it could be said to be
worse than taking poison.

But Kanzaki didn't stop.

With such savage and suicidal intent, she continued to hack at the water wings
one by one, not letting up.

Kanzaki Kaori was holding off the angel's attacks, getting closer to death.
Every move she took, she could clearly feel her body being eroded. Every time
she swung the Shichiten Shichitou, the overwork would rip her joints and twitch
her blood vessels. The organs that were unable to get enough oxygen were
prompting Kanzaki's brain in pain.

There was no way to know how long Kanzaki could last. If an artery burst
because of overwork, Kanzaki would die.

"But—"

Kanzaki gritted her teeth, ripping the two water wings that attacked in a tornado
like manner.

She said with a bloody mouth, "—So what?"

Toaru Majutsu no Index Light Novel Volume 4 Chapter 3 Part 5