Going forward, whether we'll see yen appreciation or depreciation over the next year, and whether crude oil prices will fall, will be decided on the 20th.

The numbers in the futures and options markets are telling us that.
But there's no need to wait until the 20th.
Everything will be decided by whether the Bank of Japan raises rates on the 18th or 19th.
It's not too late to construct your positions after seeing the results.