The 225-issue Nikkei Stock Average added 89.73 points, or 0.47 percent, from Tuesday to 19,039.91.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 8.23 points, or 0.59 percent, at 1,411.44.
Air transportation, land transportation and securities house-linked issues comprised those that gained the most by the morning break.
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