Tomorrow's Ark Full of Heroic Spirits

In the continent of Terra where historical faults and technological faults have appeared, no one knows the stories of the historical figures in the past, and no one knows the heroes and brilliance of the past, as if forgotten in the corner of history.
It wasn't until the recovery of the heroic spirit that everyone seemed to know the glorious history of Terra!
The King of Knights holding the holy sword once led Casimir to establish the original Knights of the Round Table, and fought in all directions?
The peasant girl who took the initiative to stand up in times of crisis, the saint who led Gaul to glory?
Ivan the Terrible, who ruled Ursus with absolute power and hegemony?
And the heroes and demigods from the Age of Gods?
Have they all left behind their glory?
At this moment, everyone in Terra Continent understood one thing—their ancestors were all rich!
……
Chen: "So you are also a Heroic Spirit?"
Emiya: "It's not that I don't have one, I'm just an ordinary unsung hero."
(This book is also called "So Our Ancestors Were Rich"
"A world full of heroic spirits, only I am the guardian"
"Female Misfortune Appearance Works in Engagement Articles? ")