Investors sent Tokyo stocks surging on Monday, with shares rising on hopes that the successor to Prime Minister Suga Yoshihide will strengthen coronavirus measures and provide economic relief.
The Nikkei Average ended the day at 29,659, up 531 points or 1.8 percent from last week's close.
Analysts say investors also believe the weaker-than-expected US jobs report on Friday may make the Federal Reserve more cautious about scaling back stimulus programs.
The rally pushed the broader TOPIX index to a 31-year-high. It rose 1.2 percent to finish at 2,041, a level not seen since August of 1990, when Japan was in the so-called "bubble era."