Matou Zouken, known as the Old Worm, was indeed a worm himself.
He had once been someone who wanted to become an ally of justice, and in pursuit of that ideal, he sought immortality.
Yet as time passed, his soul decayed, turning him into a rancid thing that lived for no reason other than to keep living.
To survive, this Old Worm would do anything.
The Matou Zouken of the real world was the same kind of person, though their experiences differed somewhat.
If the Matou Zouken in the Light Screen's footage was the fallen end of a righteous man who had gone astray, then the Matou Zouken of the real world had been an existence of pure evil from the very beginning.
Now, Matou Zouken appeared once again in the Light Screen's footage, instantly dousing the people still immersed in the afterglow of the battle between the two Emiya Shiroes with cold water. Their fervor vanished without a trace, replaced by nausea and rage.
In the Light Screen's footage, Matou Zouken narrowed his eyes as he looked at the unconscious Matou Sakura. "Has the malicious power of the Holy Grail within her been forcibly triggered? Damn Caster, to dare destroy the Holy Grail substitute this old man painstakingly created."
His displeased words revealed the truth: in this "what if" scenario, Matou Sakura had been altered through the most vicious means.
Without a doubt, this triggered PTSD in many people in the real world and sent countless others' blood pressure soaring again, as they cursed with the classic line, "The Old Worm must die!"
However much they cursed or raged, though, they could not change what was happening in the Light Screen's footage. Matou Zouken then fully revealed himself and reached his right hand toward Matou Sakura.
It looked