Black Praetoria

Waking up in a farmhouse in a land he has never known, a boy known as Regg struggles to gain an understanding of the world around him, and of his memories from before he arrived. When even his new home is lost, he embarks on a journey with his adoptive brother Dal to ascend the hierarchy of the all-powerful Adventurer's Guild, going from an expendable hirebrand to a full-fledged champion of good. Along the way, Regg discovers more about his past in another world, and vows to protect others from facing his own fate.

Even at the cost of betraying his order.