I have come to the conclusion that the yen pairs may fall some more due to the G7 meeting this weekend, but in the medium term, i.e. about 2 weeks, the yen will surely weaken again. Therefore, I have hedged my open Yen positions as follows:
Short $407/pip USDJPY at 93.19.
Short $330/pip EURJPY at 125.34.
If the following key levels are broken, I may add to the shorts.
USDJPY: 92.80, EURJPY 124.50.