Japanese stocks rallied in early Monday action, enjoying some uplift from Friday's strong gains in the U.S., where many Japanese blue chips have listings, while the currency environment remained benign. The Nikkei Average was up 0.9% about half an hour into the session, wiping away the benchmark's 0.4% loss on Friday, while the broader Topix was buying A 136.49, not too far from the upper A 136 range seen at the end of the previous week, despite further uncertainty about Greece.