Boundary Magic

“Basically, we just need to let the assault forces think that another house is Kamijou
Touma’s house. With this, no matter what happens inside Kamijou Touma’s house, the
assault forces will report that everything’s clear.”
Shua! A gust of wind could be heard.
Numerous steel wires appeared beside Kanzaki. If it wasn’t for the reflected sunlight, the
naked eye would definitely have been unable to see them.
“Boundary of Forbidden Wires—a summoning circle that originates from South East
Asia. It’s meant to summon a god that protects houses.”
“How can you reveal my methods in front of them so thoroughly, Tsuchimikado?”
Kanzaki sighed, and said,
“If we have to use it on all the assault forces, it seems like we need a one-hundred-meter
radius web. The work will take about twenty minutes, so find a place to hide first.”
“Roger that~”
Tsuchimikado stroked the blue shades with his fingertips as he casually replied.
“Also, Kamijou Touma, don’t touch these wires. The Boundary of Forbidden Wires uses
a three-dimensional magic circle formed by the wires to replace a two-dimensional one.
The wires are the core of the boundary, so the magic may be dissipated if your right
hand touches it.”

“I got it, I won’t be so stupid to touch the wires when my fingers can be cut off. My right
hand just got sliced off a while back, and I don’t want to have another limb separated.
No matter how unfortunate I am, I don’t have to be that pitiful, do I?”
Suddenly, the expression on Kanzaki’s face disappeared.
“Eh? But Kami-yan, wasn’t it the single good thing among all the bad things when your
hand got cut during the Misawa Cram School battle?”
Tsuchimikado and Kamijou didn’t notice the slight change on Kanzaki’s face.
“Who will be happy with getting a hand sliced off!? Meeting someone like that damned
pedophile of an alchemist is already my misfortune.”
Kanzaki turned away from Kamijou.
Kamijou felt a chill down his back as he inadvertently turned to look at Kanzaki. That
was a subconscious act, similar to what humans would do when endangered.
Kanzaki’s back was emotionless now.
“W-what? Are you unhappy?”
“Nothing.”
Kanzaki answered.
Kanzaki left Kamijou as she went to set up the Boundary of Forbidden Wires. While
leaving, she didn’t even look back.

- Toaru Majutsu no Index Volume 4, Chapter 2 Part 5