“I fell. I was trying to jump from rooftop to rooftop.”

(Rooftop?)

Kamijou looked up at the ceiling.

Cheap student dorms lined the building level and even more of the same types of eight-story buildings were lined up. One glance out the balcony showed a gap of two meters between buildings. It was true that a running jump could get you from one rooftop to another. However...

[...]

“I made my jump fine, but I was shot in the back in midair.” The girl calling herself Index seemed to smile. “I apologize. It seems I was caught on your balcony as I fell.”

Toaru Majutsu no Index vol.1 ch.1 pt.2