TOKYO, June 10 : Japan's three largest banks said on Wednesday they will jointly issue stablecoins during the current fiscal year ending in March 2027, a sign of growing momentum for digital payments in a country where cash and credit cards remain popular. The banking arms of Japan's three largest financial groups - Mitsubishi UFJ Financial Group, Sumitomo Mitsui Financial Group and Mizuho Financial Group - will set up a council to examine operational frameworks and prepare for the issuance,