The hero who decided to become a farmer

A group of people were selected by their respected country to be transported into another world. But god gave them a secret task. Their task? To fend off the dark army and save the world from the brink of destruction unknown to its current inhabitants. Everyone will have to train hard, work hard, and risk their lives to bring peace into a world that they don't even belong in in secret. All of this just to be able to become true heroes. Except for one idiot who didn't follow his destiny and decided to start a farm in the middle of a bloody secret mission. The hero himself.