In the city of Fuyuki, there were only two mage families in total.
The Tohsaka Family, who had lived in Fuyuki City since ancient times and managed the city's Leylines.
And the Matou Family, originally named Zolgen, who had relocated from distant Britain.
In this Holy Grail War, both families had participants—the Master sent by the Tohsaka Family was its head, Tohsaka Tokiomi, while the Master sent by the Matou Family was the current family head's younger brother, Matou Kariya.
Tohsaka Tokiomi had summoned the powerful Archer-class Servant named Gilgamesh, whereas Matou Kariya had only summoned the frail Caster Servant, Manlio Ferdino Springer.
The gap in strength between their Servants was obvious at a glance.
If Tohsaka Tokiomi and that pompous Archer had encountered Berserker and her Master, neither Tohsaka Tokiomi nor Gilgamesh would have hesitated to kill the Berserker pair.
But Matou Kariya was different. First, Caster did not have the strength to deal with Berserker. Second, as a member of one of the rare mage families that "cherished the lives of others," Matou Kariya could not simply turn a blind eye to all this.
Then the source of the Holy Church's intelligence, as the supervising party, was obvious.
The source was Caster's Master, Matou Kariya. There could be no doubt about it.
There was no need to question it. Within Fuyuki City, only the Tohsaka Family and the Matou Family could provide the Holy Church with such information, and their respective attitudes upon discovering this matter had already been made clear above.
Matou Kariya's original intention had likely been to draw the supervising party's attention, temporarily suspend the ongoing Holy Grail War, and eliminate Berserker and her Master, who had clearly violated the rules of the Holy Grail War.
After all, neither he nor Caster had the ability