The Nikkei average saw its highest close in nearly five months today after climbing 2.28 per cent.
Investors snapped up shares of Canon and other leading Japanese firms after the Dow Jones industrial average booked its second straight record-high close.
But shares of Toshiba dropped more than 5 per cent as investors worried about the financial impact of the company's larger-than-expected investment in US firm Westinghouse.
The Nikkei finished up 366.78 points at 16,449.33, its highest close since May 12th. The broad TOPIX index rose 1.95 per cent to 1,633.20.