Retailers and steel makers also rose, with the market's mood cheered by Wall Street's overnight gains on the back of easing oil prices. But analysts said such gains were mainly due to a knee-jerk reaction to a rise on Wall Street, and market sentiment remained fragile amid a lack of players, who are holding back amid uncertainty over Wall Street's short-term outlook. Investors are also cautious about trading as speculation mounts over whether the Organisation of Petroleum Exporting Countries (OPEC) will agree to raise oil output at a June 3 meeting in Beirut. "There are few trading factors at home as the corporate earnings season is drawing to an end. That's why the market is so dependent on US stocks," said Terushi Hirotama, head of trading at Ichiyoshi Securities. "But that means if Wall Street wilts tonight then Tokyo will also go down tomorrow."