 Mizuho Financial Group said on Friday its net profit dropped 24.6 in the first quarter of its financial year as credit-related costs rose amid the coronavirus pandemic. For the current financial year through March 2021, Mizuho reiterated a forecast for profit of 320 billion yen. Japanese banks have been struggling with ultra-low interest rates for years, and the three major lenders - Mizuho, Mitsubishi UFJ Financial Group Inc and Sumitomo Mitsui Financial Group Inc - have said credit-related costs this year would reach levels not seen since the global financial crisis. 