The South Korean KOSPI index surged by 169.38 points, or 2.72%, to close at a record high of 6,388.47 on April 21. This marks a significant milestone for the index, reflecting strong market performance. Meanwhile, Japan's Nikkei 225 index also experienced gains, rising by 524.28 points, or 0.89%, to close at 59,349.17. Both indices' upward movements highlight positive investor sentiment in the Asian markets.