The 225-issue Nikkei Stock Average added 229.06 points, or 1.09 percent, from Wednesday to close the day at 21,329.12.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 13.21 points, or 0.88 percent, to finish at 1,515.71.
Electric power and gas, pharmaceutical and miscellaneous product-linked issues comprised those that gained the most by the close of play.
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