Benchmark Tokyo rubber futures ended up 0.8 percent on Thursday as the yen's fall to a two-month low against the US dollar led investors to unwind some short positions despite oil prices trading near multi-month lows. Tokyo Commodity Exchange (TOCOM) futures, which set the tone for tyre rubber prices in Southeast Asia, however, are seen in a downward trend due to worries over Chinese demand, despite a temporary uptick thanks to a lower yen, a Tokyo-based broker said.