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In a world divided between the nations of Ku-Jin and Shin-Geki, humanity lives under the threat of a mysterious power known as Shingeki, granted through creatures called Kaigo. Those infected gain devastating abilities, but slowly lose their humanity. To fight back against the chaos, the warriors of Ku-Jin use the sacred technique known as Revolt of Mudan, a power capable of reflecting an enemy’s energy back at them. As the war between the two sides continues for centuries, a young boy named Akimitsu Haru begins to uncover the hidden truth behind his world, the Shingeki, and the legendary ruler of the Shin-Geki nation, Shigeru Tendo. As the line between good and evil begins to fade, Akimitsu is drawn into a conflict that could change the fate of the entire world.