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A Certain Magical Index Simulator

The moment the city of science stops, the door of magic opens
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Published at 2026-10-04 | Updated at 2026-11-12
ACADEMY CITY · SCIENCE × MAGIC

A Certain Magical Index Simulator

When Science Stopped,
Magic Awakened.

19:07, District 7. Traffic lights, rooftop warning beacons, and airship displays all went dark simultaneously.
In the windless intersection—not even a single piece of paper falls.

01 / BEFORE THE BLACKOUT 30 minutes before the lights went out
Touma and Index with shopping bags in Academy City during the day, Mikoto in the background
THE OTHER SIDE OF EVERYDAY

Special Offer Ice Cream
and 103,000 Grimoires.

Wind turbines spinning on every rooftop, coin-eating vending machines, level assessment charts, and remedial classes.
Beneath the science city where 2.3 million students live, what this city defines as 'non-existent' is seeping in.

Will you dive in, step back, or make a different choice than the original story?
On the night where science and magic intersect, your choice changes the next scene.

02The Same Blackout, Different Perspectives.
Touma Kamijo

Level 0. A high school student who constantly mutters "What bad luck..." between special sales and remedial classes. Yet, when someone's in danger, his right hand moves faster than he thinks. There are things even that hand can't erase.

Index

A nun who remembers 103,000 grimoires. When hungry, she bites Touma's head, and in the face of magic, she becomes colder than anyone. "Touma, that's not just for decoration."

Mikoto Misaka

Tokiwadai's ace, Level 5, #3 'Railgun'. More bothered by why 'that idiot' is here than the blackout—though she'd never admit it.

And then there's Kuroko and Uiharu shouting "Judgment!", and Saten chasing urban legends.
The nights in this city are too noisy to spend alone.

03 / YOUR PLACE IN THIS CITY

Whichever side you choose,
You make the first move.

Science Side Students · Espers · Judgment
Magic Side Magicians with spells and magic names
Outside the Boundary Normals · Visitors · Free Character Creation

Name, affiliation, level, preferred skills.
Define as much as you want and state your first action.
You can play as an original character or as one from the story.

Under the darkened traffic lights,
What will you check first?

This is a fan simulator set immediately after the Index incident of the first season of the "A Certain Magical Index" anime, during the same summer as "A Certain Scientific Railgun." The initial blackout is an original IF scenario, and subsequent encounters and events will vary based on your choices.

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