The first arc of A Certain Magical Index, consisting of volume 1 of the light novels, chapters 1-10 of the manga, and episodes 1-6 of the anime.
- A Day in the Limelight: For Stiyl Magnus and Kanzaki Kaori.
- Arc Villain: Pen Mode Index.
- Magnetic Weapons: Mikoto's magnetic accelerator cannon, her famous railgun, is the first power we see demonstrated in the series. She uses her electromaster powers to magnetically slingshot a coin to supersonic speeds.
- Mugging the Monster: Touma tries to save a bunch of delinquents who tried to bully Mikoto Misaka. He fails, and she fries them.
- Outside-Context Problem: Touma was just an ordinary kid living in a city of scientific superpowers. He was completely unprepared for a nun landing on his balcony and insisting that she was being chased by magicians.
