The Bank of Japan kept rates at -.1% while also maintaining yield curve control. This is how the bank described the current economic situation in Japan (emphasis added):
Japan's economy has started to pick up with economic activity resuming gradually, although it has remained in a severe situation due to the impact of the novel coronavirus (COVID-19) at home and abroad. Overseas economies also have started to pick up from a state of significant depression. In this situation, exports and industrial production have turned to a pick-up. On the other hand, corporate profits and business