As a safehaven currency the Yen is borrowed (due to Japans near zero borrowing rate) to fund the purchase of higher yielding currencies. This trade is known as the carry trade, the trade carrys a degree of risk if rates change
and the carry trade is more popular in times of risk appetite. The carry trade will all-things-being-equal weaken the Yen.
Support in the case of breakout can be found at 89.30 and after this 88.80 according to this technical report.On the upside primary resistance can be found at 89.70.