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Last name 周一 (Shuichi , 周一 , Syuiti) , worldwide, is quite a rare cognomen. The family name 周一 is habitual in Japan, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Hungary. Not in comparison with a country's population, this name is the most popular in Japan, China, and Indonesia. Likewise, 周一 is the forename as well as the last name.