If so, keep a sharp eye on this page from the BOJ, http://www.boj.or.jp/en/type/stat/boj_stat/fx_daily10/index.htm, and add it to you favourites. The number to watch is the trade weighted index down the bottom of each pdf. The BOJ intervened when the index got close to 120 and as its now back above 124, the pressure is probably off.