“John’s Pen.”

That trap had supposedly already been lost, but if the residual memories remained, Shokuhou Misaki’s Mental Out could restore it within the silver girl’s mind. She could not directly control the girl, but that could change if she restored the backdoor previously installed there. It was like restoring your malfunctioning computer to an older state and bringing back a virus you thought you had already eliminated.

“Stop Misaka-san! Hurry!!”

“Warning: Chapter 0, Verse 0.”

Creepy magic circles appeared deep in her lovely eyes.

The silver-haired girl in a storybook princess’s dress moved in an inhuman way that may have been even more lifeless than Misaka Mikoto with her blue veil fluttering like a curtain.

(It… worked???)

And.

And.

And.

“Illegitimate contact detected. Response level: top priority. Destroying all possible suspects to restore security stability.”

[...]

“Same with Index!! John’s Pen should have been controllable using Mental Out

Toaru Majutsu no Index New Testament vol.22R ch.4 pt.4, 10