In an astounding display of ethics and honesty, Tokyo's lost & found system has amassed over ¥4.5 billion ($40 million) in lost cash in 25 years. This unusual "windfall" is the result of a deeply ingrained social norm where Japanese citizens conscientiously return lost items, including money, to the appropriate authorities. The exact location or context in which this impressive figure was calculated is currently unclear.

Japan has a reputation for strict adherence to societal norms and codes. The vast amount of money turned in demonstrates the high level of ethical behavior and integrity in Japanese society, even concerning potential personal gain. In Japan, making an earnest effort to return lost possessions to their owner, including money, is both a personal and legal obligation.

US or EU cities may have systems for dealing with lost items, but none quite like the efficient and integrity-driven approach seen in Japan. Many lost items, especially cash, may remain unclaimed or even kept by the finder due to the lack of societal emphasis on returning them. Also, there is generally less trust in the system's efficacy.