Start a Brave Career from Scratch

At the end of the apocalypse, Zero-One was reincarnated as the head of the Brave Village for some unknown reason. He seemed to have to save the world. But before he can save this world, he must first go to other worlds to put out fires, otherwise this world will collapse due to weakness. When everything was going smoothly for Zero One, the intrusion of the gods started a racial war, and perhaps the world would be at war. "Fortunately, I have a cheating device and discovered you LYBs in advance!"