Kamijou Touma blew away Stiyl Magnus’s final trump card. As if he had stabbed a water balloon with a pin, the human-shaped fuel oil symbolizing the giant flame god burst into spray and scattered about the area.

[...]

“Wha-!?”

As Kamijou took a step back in surprise, the black spray returned from all directions, gathered in midair, and reformed into a human shape.

If Kamijou had taken that last step, he would certainly have been enveloped by flames from all directions.

Kamijou’s mind was thrown into disarray at the scene before his eyes. If his right hand could do what he was always saying it could, it could negate even the systems of God seen in myths in a single strike. If that had been the supernatural power known as magic, he should have been able to negate it with that one touch. And yet…

Toaru Majutsu no Index vol.1 ch.1 pt.6