TOKYO, Oct 12 (Reuters) - Japan's Nikkei average fell 2.1 percent on Tuesday, dragged lower by a climb in the yen to fresh 15-year highs against the dollar, with investors nervous to see whether authorities will intervene in the currency markets.
Despite early gains on the back of climbs in global equities after weak U.S. jobs data strengthened the case for more stimulus from the Federal Reserve, the benchmark Nikkei shed 200.24 points to 9,388.64, its worst daily percentage drop in about a month.
The broader Topix lost 1.8 percent to 824.60.
A surprisingly weak profit forecast from popular stock Fast Retailing sent its shares down more than 9 percent, weighing on the benchmark Nikkei, as the earnings season kicks off in earnest in Japan later this month. (Reporting by Aiko Hayashi; Editing by Joseph Radford)