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A ring that can freely travel between the world and the end of the world was picked up by Song Chao. The food of the world is more valuable than gold in the end of the world, and more coincidentally, there is nothing in the end of the world, just mor

"But I'm powerless without you, my Master."After being suddenly summoned to another world and saving that world from a crisis, high school students Wataru and Rumi have safely made it back to the real world. But the real world has been completely tra