Japanese authorities have recently discovered counterfeit 100-yen coins in circulation. These fake coins came to light after being used for currency exchange in various shops. It's unclear at this point as to how these deceptive coins entered the system and who's behind the operation. The authorities are urging retailers and consumers to inspect their change carefully for any abnormalities.

Counterfeiting currency is a serious offense in Japan as it destabilizes the trust in the national economic system and leads to considerable loss for private businesses. The Japanese public tends to take such incidents seriously, placing high value on the integrity of their economic systems. As the issue has gained nationwide coverage, it has sparked significant concern and prompted an intensive investigation.

Like in Japan, the production or distribution of counterfeit currency is a grave offense in the US and EU. All involved parties work diligently to maintain the security of their currency systems, which includes educating the public about detecting counterfeit money and the consequences of knowingly using it.