USDJPY December is coming. Everyone cashing out before Christmas. It’s normal across every asset. January is characterized with bull runs so I would not expect it before 25 Dec. it could reach 150-151 if the momentum stays the same
USDJPY if you were fund managers and with such a bull run for this pair, you would probably taking profits and wrapping up. would not open long or short to ruin the gain that already made or for their own bonuses and reputation.