Nikkei 225 closes up 2.1% at 66,399.84

The Nikkei's sharp gain, outpacing the Topix, suggests large-cap leadership in Japan, while the KOSPI's even stronger surge points to regional momentum rather than a Japan-specific story. This divergence between headline and broad indices may signal rotation into heavyweight exporters or tech names, but the material offers no driver. The key watch is whether this regional risk-on tone persists across sessions or reflects a one-off adjustment. For markets, the magnitude of the KOSPI move versus the Nikkei's is the standout, hinting at differentiated sector exposure that could guide cross-market positioning.