USDJPY stays in a ascending price channel on 4-hour chart and remains in short term uptrend from 108.13. As long as the pair is in the channel, the upward movement could be expected to continue, and next target would be at 112.00 area. On the downside, a clear break below the channel support will indicate that the upward movement had completed at 110.57 already, and the downtrend from 115.50 has resumed, then further decline to test 108.13 support could be seen.