oriana counter attack

It was the will of all the people who had told them what they thought during this
incident.
(I won’t...)
His consciousness wavering, Kamijou clenched his back teeth.
Firmly.
(...I won’t let all that go to waste here, damn it!!)
“Gah...aaahhhhh!!”
Finally, his legs moved. His vision, sinking to the side, was finally supported by the
ground underneath him.
In front of him was Oriana Thomson. With her fist out to get him.
“Wait...What?!”
Her eyes widened in surprise. She probably hadn’t even considered the possibility that
he’d counterattack. She was completely committed to her attack—which also left her
badly defenseless.
His mind hazy, he put everything he had into clenching his right fist. Tightly and firmly
enough that it would never open.
One moment later.
Their fists crossed.
Kamijou’s attack struck Oriana in the face.
The magician’s body sprang away fiercely, then fell to the ground.

- Toaru Majutsu no Index Volume 10, Chapter 8 Part 8