I don't know for Japan, but it did work during my previous trip to the Philippines (November 2017 - August 2018). The only problem is that you will not be able to pay the exact amount if the source bank does not support the destination bank account's currency, which is quite often the case for Philippine peso.

But JPY is quite popular; I have just checked that Raiffeisen Bank in Russia still allows selecting it online as a currency for a foreign transfer. It's too bad I won't be able to do the same online from my Metrobank account in the Philippines.