104.4 is a very important structure level for USDJPY . In January we saw a strong bearish reaction from that and now, after its breakout, it turned into support.
On that, the price formed a double bottom formation this week. The first low of the pattern was nicely rejected from the underlined level.
To buy wisely, I recommend waiting for 4H violation of 104.8 minor resistance. Then buy the pair aggressively or on retest. Goals: 105.2 / 105.65
In case if the price sets a new low on 4h, setup will be invalid.