Japan's Nikkei 225 Index initially soared to a record high of 63,385.04 on Monday, buoyed by optimism surrounding corporate earnings and technology investments. However, the index ultimately retreated, closing down 0.1% at 62,666.57. This decline was largely attributed to renewed concerns over the Middle East crisis, particularly following U.S. President Donald Trump's rejection of Iran's response to peace proposals, which dampened hopes for resolution. Despite this, the broader Topix index managed a slight gain, climbing 0.23% to 3,838.26. Notably, Japanese chipmaker Kioxia surged 6.8% after a strong performance last week, while video game maker Konami Group and Japan Tobacco also reported robust earnings. In contrast, Nintendo's stock fell 6.5% after announcing a price increase for its Switch 2 console. The mixed performance highlights ongoing uncertainties in the market, particularly regarding consumer sentiment and rising energy costs.