Many families of ancient mages offer their blood for their ancestor’s thesis.
But Messara’s actions didn’t follow that common sense.
When the ancient mage established the Escardos family, he set up one gimmick to further his research.
The longer his lineage continued, the more they would lose information on the family’s purpose.
Messara couldn’t trust the descendants he didn’t know.
He could predict that when the goal was close to completion, someone would try to achieve its conclusion in their own generation instead of waiting for its maturation.
I can’t let this happen.
Messara rejected his descendant’s passion before it came to be.
My creation will naturally complete itself one random day. It must. There’s no point in letting out in an imperfect state. If my theories are correct, my creation will spawn naturally and take away everything the Escardos clan ever had.
That’s what it meant to instrumentalize his descendants’ blood.
By the time that happens, his mage descendants will all be assuming that the Escardos were a family with no thesis, only a lot of history. Therefore, they would either find some new thesis that exploited their unique Magic Crest or would simply be trying to gain money and status in the world of magecraft.
Messara Escardos feared that his glory-hounding descendants could add their modifications to their Magic Circuit’s evolution system or the Magic Crest in an attempt to “become” his creation.


Fate/Strange Fake: Volume 7, Bridge: "Messara Escardos"