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Cognomen マサル (Masaru , マサル ) , in the entire world, is a common last name. The cognomen マサル is habitual in Japan, where it is quite a common surname, Israel, where it is quite a rare surname, and Romania, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Japan, China, and India. Much less frequently, マサル is the forename as well as the last name.