The Nikkei 225 Stock Average climbed 0.75 per cent, or 62.53 points, to 8,428.43. The broader Topix Index added 0.92 per cent, or 6.51, to 712.97.
"Company-specific news is driving us, but the market is generally a bit more positive based on the QE3 expectation," said Matt Riordan, a portfolio manager at Sydney-based Paradice Investment Management Pty.
"Europe is lurching and no closer to a solution."