Emissary

Ewan O'Meara is no stranger to death: in recent months, he's found his way to limbo at least once per week, much to his parents' concern. It's a necessary price for getting experience to become the greatest adventurer his homeland of Veridor has ever known, but the overbearing Veridian Church has him pinned down, soaking him for the penance gold to unlock his stats each time he respawns. And because the Church's ancient war put an end to both the godlike Gems and the epic quests they once bestowed, Ewan has no better alternative.
That is, until he encounters a young woman fleeing arrest from the Church's soldiers. At first glance, Treanna Rothchild needs it: she's clueless about Veridian life. But she has other skills that defy Ewan's understanding, and she knows things. Unsettling, seditious things the Church wants kept secret at any cost.

And she's in Veridor to raise an army, to fight an enemy only she can see.
Risking both life and soul, Ewan follows Treanna where no Veridian has ever been, where there is no respawning. But for him to have a chance at making a real difference in the strange, harsh world she reveals to him, he must first come to terms with it. Especially as he and Treanna discover how much it has in common with Veridor-and how much they depend on each other to survive.