The boy seemed to have noticed him.

They did not greet one another.

They only had to accomplish their respective goals.

First, Kamijou and the girl’s acrobike shot past Fiamma.

The red-haired man stared straight forward.

The purple-robed pursuer also seemed to have noticed Fiamma of the Right.

There was no need to greet him with a nod.
[...]
One of them was a true Magic God and the other was a red-haired man who had wished to save the world.

The two of them crossed paths head-on.
[...]
A deafening sound exploded behind Kamijou.

He braked as hard as he could, felt that was not enough, and pressed the soles of his shoes against the brick walking path.

The acrobike screeched to a stop with a burning smell.

It was over.

Kamijou gulped.

The result was plain as day, but he found it hard to believe what he saw.

He felt dizzy.

Still, he had to accept it.

Otherwise, he could not move on.

After all…

“Kah kah.”

He heard parched laughter.

It did not come from Fiamma.

Fiamma’s laughter did not sound like it came from a whistle made of dried grass.

“Kah kah kah! Kah kah kah kah kah kah kah kah kah kah kah kah kah!!”

“Dammit! Fiamma!!”

Shouting was not going to help.

It had already been over by the time they had crossed paths. The giant stake of light had stretched all the way across the large park, but it was shattering like glass and vanishing. No, it was more than just that. The one-armed man rotated quickly through the air. He made more than just one rotation. He was stuck in a wild spin with no thought given to control or a safe landing. He was clearly going to slam into the ground’s dried grass without bracing himself.

It was unclear just what kind of battle had unfolded, but the result could not have been more obvious.

Not even Fiamma of the Right had been able to do anything. Not even his prized fairy spell had stopped the High Priest.

Kamijou had caused this.

He could not see the future, so he could not have known what would have happened. Fiamma may not have wanted Kamijou to blame himself, but if Kamijou had not relied on him and had done something else, this would not have happened.

- To Aru Majutsu no Index NT 13 Chapter 2 Part 12-14