USDJPY is facing the support of the rising price channel on the 4-hour chart. A breakdown below the channel support would indicate that the upside movement from 104.44 (Aug 26 low) had completed at 109.72 already, then the pair would find next support at 107.88, followed by 107.00. Near term resistance is at 109.00, above this level could trigger another rise towards 110.00.