Illusory attack!
This was a classic form of mental attack.
As an experienced Guardian, Red A had naturally encountered this kind of attack many times.
So the man immediately projected a strange hammer and struck himself on the head with it.
The blow was not hard, but it produced a surge of magical energy—a method clearly intended to dispel illusions from himself.
However, it failed.
Red A found that the scene before him had not changed in the slightest, nor had he himself changed at all.
At once, Red A understood. This was not a mere illusion, but...
"A grand illusion similar to a Reality Marble? As expected of the Witch of Betrayal. Such mastery of magecraft is truly terrifying."
"No, precisely because she is that Witch of Betrayal, such magical attainments are only natural. A being who could be called a genius in the Age of Gods would unquestionably be a 'monster' by modern standards."
"Still, even this kind of 'real illusion' is nothing I haven't experienced before, so..."
Those murmured words carried confidence, along with disdain for this realistic illusion.
In truth, Red A had every reason to be confident. As a battle-hardened Guardian, what kind of grand scenes had he not witnessed?
Then Red A dropped to his knees.
It was sudden, yet strangely graceful, bearing the bewilderment of a proud and unruly man after being brutally beaten down by society.
Clutching his head as he knelt on one knee, Red A felt a sudden, piercing pain in his skull. A will belonging to someone else had abruptly invaded his mind.
Red A understood almost immediately what was happening.
"This is... soul resonance? That kid!"
He sensed it—the influence coming from Emiya Shirou. The same soul, under Medea's realistic illusion magecraft, had actually produced an unexpected chemical