IB is weak to 'karma'

Kamijou honestly obeyed the fear and loathing that spread from his heart to his entire
body. He clenched his right fist and took a step forward. Rather than drawing out his
courage, he swung his fist for the same pessimistic reason as someone grabbing for the
remote to change the channel when a horror movie came on TV.
“!? Wait, human!!”
Othinus shouted from his shoulder again.
He jumped in surprise, but there was no stopping now. He understood he had stepped on
some kind of landmine. After all, the Magic God who had crushed Imagine Breaker with
Gungnir or her crossbow was frantically telling him to stop. Something awful was bound
to happen. The fear and regret sneaking up his spine were enough to make him want to
squeeze his eyes shut.
Then his fist collided with the chain skeleton.
Immediately afterwards, the clear flesh and blood and the rainbow-colored skeleton burst
like a water balloon.
“Eh…? Ah…???”
Because it had gone too well, Kamijou’s heart pounded irregularly in his chest. It was like
being told that a ballpoint pen would give him a shock if he knocked on it, clenching his
teeth as he tried it, and then finding that nothing happened. His mind was unsure how to
process the phenomenon before his eyes.
But the magicians were still cautious.
“Don’t let your guard down,” said Fran. “Some kind of haze is enveloping you!!”
“?”
When Hoodie Bikini Fran pointed that out, Kamijou finally looked down at his own body.
She was right.
It was not quite static electricity, not quite an aurora, and not quite fog. It was like the
shininess on the surface of a CD. Some kind of vague haze was seeping out of the air and
vanishing as it thinly surrounded him. Kamijou may not have known much about magic,
but the similar coloration to the strange handcuff chain told him this was bad news.
“B-but so what? It doesn’t matter if this light or haze or whatever surrounds me. It’s not
like it hurts or—”
His entire body froze before he could finish with “anything”.
He saw Tsuchimikado Maika who merely looked puzzled.
She clearly had a weapon through her chest, but she felt no pain or suffering. A lack of
subjective symptoms did not mean nothing was wrong.
“Karma, hm?”
Tsuchimikado sounded annoyed.
Kamijou frowned.
“Karma?”
“You might not expect that from a Brit like Crowley, but as much as the Golden cabal likes
to say it’s based in Kabbalah, its foundation of Hermeticism is actually a multinational
mix of Egyptian and Greek mythology with names like Thoth and Mercury all over the
place. On top of that, he made his own conversion chart to show how the Eastern I Ching
worked using Western values. His journeys took him to Asia and there’s a story of him
trying to change religions on the spot upon seeing a Kamakura-era Buddhist temple.”
“No, um, I was more asking what karma even is.”
“Karma as in karmic retribution. It’s the idea that your own actions invite the result you
receive.” Othinus crossed her arms and sighed on his shoulder. “The simplest form of
karma is the karma of killing. If you kill someone’s parent, the child will pursue you for
revenge. That’s your karmic retribution. …And that’s what you’ve done here. By shattering
and killing that rainbow chain with your right hand, you now bear that karma. This is not
a good situation. He clearly sent that assassin to place this karma on you.”
Index put on a troubled expression and continued the explanation.
“According to Book 4 and Liber 777, the chain symbolic weapon is used to bind wandering
thoughts. But unlike the fire wand or wind dagger, it isn’t a physical tool. It’s only a way
of controlling the spell user who has lost their consciousness.”
“So what happens to me with this stuff around me…?”
“I don’t know. But the more it happens, the more powerful and thicker it will grow. You
can punch through a single piece of paper with a fingertip, but enough layers of paper can
stop a bullet.”
Kamijou pictured himself being forced to wear ten or even a hundred layers of clothing.
Just how much weight and pain would they bring? It was possible he would be rendered
immobile.
“But can’t I just destroy this rainbow karma stuff with my right hand?”
“Aleister has been raising Imagine Breaker in his city, so do you really think he wouldn’t
have thought of that, human? You can kill the karma, but then you will bear the karma of
killing karma. If you kill the child come to avenge their parent, you’ll only be attacked by
their sibling.”

- New Testament Volume 18 Chapter 2 Part 2