Since 1990 , Japanese descendants from foreign countries have been permitted to stay in Japan freely .
Approximately 10 % of the total population are foreign citizens , mostly Japanese Brazilians , who work at many factories in the town .
Since 1990 , Japanese descendants from foreign countries have been permitted to stay in Japanese freely .
Approximately 10 % of the total population are foreign citizens , mostly Japanese Brazilians , who work at many factories in the town .