Tokyo stocks have surged to multiyear highs on the back of the yen's tumble, brought on by the Bank of Japan's powerful credit easing measures and hopes of a sustainable recovery in the U.S.

Analysts believe the stock rally will continue over the long term, though there may be some valleys in the short run. Meanwhile, there needs to be a tangible economic recovery supported by rises in wages and personal spending to maintain momentum.

As of Friday, the dollar had climbed above the ¥101 line, significantly up from the lower ¥92 range logged just a little more than a month ago.