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Asashōryū comes from an ethnic Mongol family with a strong background in Mongolian wrestling, with his father and two of his elder brothers all achieving high ranks in the sport. He also trained in judo in Mongolia. He originally came to Japan as an exchange student, together with his friend, the future Asasekiryū, where they attended Meitoku Gijuku High School in Kōchi Prefecture. They both trained together at the sumo club there.