building wall explosion

That was when the closely flying rotating blades struck. The rotating blades had looked
like they were trying to repel each other in midair which made them fall to the ground in
random but hard to avoid trajectories.
(...!!!???)
He hadn’t been able to let out a yell that time.
The multiple blades tore into the asphalt and mercilessly destroyed building walls. Just
when Kamijou realized Index’s hand had slipped from his grip, his body was thrown into
the air. He had managed to avoid being directly hit, but his body had been lifted up
along with the torn up asphalt.
He didn’t even have time to brace for the impact.
When he struck the hard ground, Kamijou thought his breathing was going to stop.
(Agh!? Shit...)
“Index...? Kanzaki...Itsuwa!! Dammit, where is everyone!?”
The shock of the impact had blown dust up into the air preventing Kamijou from seeing
anything. He coughed as he attempted to call his comrades’ names.

- Toaru Majutsu no Index Volume 18, Chapter 7 Part 3