silent coin break

The words had barely left his mouth before Fukiyose Seiri rocked him with a fist to his
temple. His head spun. The painter woman smiled and offered her hand again.
(I wonder if Index could stop biting and learn a more gentle, cultured approach like
this.)
Kamijou took her right hand in his right hand.
There was an odd sound, almost like something was breaking.
“Huh?”
That was neither Kamijou nor the woman, but Fukiyose Seiri who was watching them.
The two people shaking hands both knew what had just happened, so they didn’t say
anything.
Kamijou Touma was busy recalling the power in his right hand anyway.
And the painter woman was busy figuring out what had just broken.
“Whoopsies!” The woman forced a dry smile but failed even at that. “I should really be
getting back to my work. May I go now?”
And then she left without waiting for a reply.

- Toaru Majutsu no Index Volume 9, Chapter 2 Part 6

***

“Right, so in terms of the trouble I’m having—”
“It is judged a crime of adultery against our Lord should we engage in sexual relations
with another, for all nuns are the brides of the Son of God...Oh, but my lecture—”
Oriana shrugged off the ‘can wait’ and spoke.
“Essentially, that spell I used on myself has broken.”
That spell.
The name of it was Silent Coin.
Oriana had used it as a sort of insurance. A spell to sap the energy of those who wanted
to chase her. It wouldn’t have any effect if she were actually engaged in a conversation
with someone. Just turning her back, though, would make the person think it wasn’t
worth stopping her or that it could wait until next time. They wouldn’t, under any
circumstances, call out to her after that. This magic was a configuration of the people
clearing field spell that operated on a similar principle to an Opila rune barrier.
As long as the spell was active, Oriana could make balls of flame appear in her palms or
whatever else, and nobody would feel like calling her out for it. That’s why she was using
it—so she could get this “deal” finished without worry, but...for various reasons, Oriana
was unable to reconstruct the spell now that it had broken.

- Toaru Majutsu no Index Volume 9, Chapter 2 Part 7