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Surname Sang-Soo (상수 , Sang-Soo , サンス ) , throughout the world, is a very rare cognomen. The last name Sang-Soo is characteristic of Eastern Asia, particularly Japan, where it is a very rare surname. Much more frequently, Sang-Soo is the forename as well as the last name. Parts of the name also exists independently as a last name Sang, and a last name Soo.