Nikkei 225 closes up 2.3% at 58,775.50; Topix gains 3%

The notable detail is the breadth: Topix outgaining the Nikkei means the rally was not confined to a handful of large-cap export names, which is the more durable signal for Japanese equities. South Korea's divergence is equally telling, suggesting this is a Japan-specific move rather than a broad regional risk-on wave. Whether the Topix's outperformance persists, or narrows back toward the Nikkei, is the open question worth watching.