The 225-issue Nikkei Stock Average added 389.02 points, or 1.37 percent, from Thursday to 28,730.97.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 21.69 points, or 1.16 percent, at 1,886.81.
Air transportation, mining and transportation equipment issues comprised those that advanced the most by the morning break.
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