“He had taken her to a cave behind a waterfall, where he had kept all of the stones she had tried and failed to cut. There were the marks of her failure: slashes in the rocks where her madra had cut. The scars started faint, but they got wider and deeper. And the stones got bigger. “This is what you did yesterday,” he’d said, pointing to the largest rock, the one with the deepest cut. “I can’t wait to see what you do tomorrow.”