When PS4 is set to JP, O always means confirm and X always means cancel.
However, O and X are reversed on the logon screen which is the first screen to enter password. This problem didn't happen on PS3.
In addition, on selecting character screen, it will change back to O=confirm/X=Cancel.
This inconsistency shows that the logon screen forgets to set O/X button in accordance with t he system setting, Hope it could be fixed. Thanks.