The Nikkei 225 Index in Japan opened 410.48 points higher, or 0.71%, at 58,287.87 on April 15, marking its first-ever close above the 58,000 level. Meanwhile, South Korea's KOSPI Index surged 177.87 points, or 2.98%, to open at 6,145.62. Notably, shares of Samsung Electronics rose by more than 4%, contributing to the KOSPI's strong performance.