USD/JPY treading very cautiously so far today

As noted here a little earlier this morning, the Nikkei 225 took taken quite a hit on Friday. To correct that earlier update the index is actually closed today, due to a Japanese public holiday- Marine Day. If it were open it would be a little lower right now, after it reversed the gain to a new record last Thursday, at 42,426. So, that means the BOJ are on Holiday today too, right? Well, that is technically correct, but they are still watching the markets and the USD/JPY closely and be in no doubt about that. The USD/JPY traded to a low at 157.38 on Friday, which means it just surpassed the low seen on Thursday, at 157.44. However, so far it has rejected a deeper move below that level and rebounded earlier today, to a high at 158.42. The dollar is trying to bounce again just now after falling back to below 158 from that earlier high. The high seen on Friday was set at 159.45 so we have a clearly defined set of parameters in place today (157.38-159.45). The low seen earlier today was set at 157.81 and the USD/JPY is currently trading at 158.18