The 225-issue Nikkei Stock Average gained 188.75 points, or 0.99 percent from Thursday to 19,235.30 at the break, Xinhua reported.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange rose 9.52 points, or 0.62 percent to 1,549.87.
The morning’s notable advancers comprised pharmaceuticals, electric machinery and air transport-linked shares. (IANS)