South Korea's KOSPI index opened 2.17% lower on Monday, April 13, reflecting a broader decline in global markets. The index fell by 127.08 points to 5,731.79. Similarly, Japan's Nikkei 225 index also experienced a downturn, opening 0.98% lower, down 557.91 points to 56,366.20. These declines highlight ongoing market volatility as investors react to global economic uncertainties.