In the instant of the clash between heaven and earth, Accelerator accurately attacked his target. He saw every action Kamijou Touma took while holding his right fist toward the heavens.

The monster did not even think about evading, but not because he was overly reliant on his reflection. He was well aware how unique that right hand was and he decided to rush in despite that hand which would pierce his absolute defense.

As long as he remained conscious and could continue his calculations, he would crush the boy before him.

He understood the power of that hand.

(…?)

Or so he thought.

Kamijou Touma took an odd action.

He first made a cross counter, just as Accelerator had expected. Aiming for the center of the chest rather than the face was certainly out of the ordinary, but it was within the range of options he could take with that fist.

The problem was what came later.

Kamijou swung up the baby head rock with his left hand.

He first neutralized the reflection with his right hand and then he applied a tremendous force to Accelerator’s heart, even if it meant crushing his own right fist in the process. The impact from the rock was much greater than anything he could have caused with a mere fist.

(Ah.)

Accelerator’s mind went blank.

With a tremendous noise, the thoughts that controlled his calculations cut out for an instant.

- To Aru Majutsu no Index New Testament Volume 10 Chapter 9 Part 5