The Circle. The Circle Trilogy, #1

In the city of Vael, your future is decided before you are born. Hannah Vale has spent years working as a copyist in a shop beneath the transit rails - faster and more accurate than any licensed clerk, overlooked by every institution that benefits from her labor. The Academy towers above the lower districts like a promise kept from the wrong people. She has applied three times. Three times, the same silver-sealed refusal has arrived.
Now she intends to apply differently. Beneath the planet Jeron, in the Seventh City - an underground civilization older than recorded history - an archivist named Kael has spent six years mapping corridors that bend against mathematics and doors built for inhabitants the size of myths. The city has stopped answering his questions. So he is going to find better ones. Two people from opposite ends of a vast and fragile civilization, moving toward the same buried truth without knowing it.
Who built the world they inherited? Why did the old kingdoms vanish? What, exactly, did the Circle Alliance inherit - and what did it forget? The Circle is a sweeping, character-driven epic fantasy set against a world of stratified cities, ancient ruins, and institutions built to preserve themselves at any cost. Perfect for readers of Ursula K. Le Guin, N. K. Jemisin, and Patrick Rothfuss. "We did not understand, at first, that we could return." The story continues in The Validation, Book Two of The Circle Series.