Roof Jump

Kamijou had no time to be flabbergasted—next, Kanzaki bounded up. Again, without
getting a running start, she just flew straight up there, surpassed the head of Misha who
was on the first-floor roof, and touched down on the second-floor roof without a sound.

Then, she continued to run to the other side of the roof, toward where the backyard-
facing porch was.

This was ridiculous. Unreasonable even. It was like a child had asked, “What should I do
so I can run really fast?” and the completely serious answer had been, “Graft an engine
onto your body.” Some basic fundamental thing was totally out of whack.

- Toaru Majutsu no Index Volume 4, Chapter 2 Part 6