Bypass DVD regional lockout (Japanese version)
*** This trick requires an original non-analog PlayStation controller and a PlayStation 2 console with the launch version DVD utility software and memory card package. Plug the controller into port one. Place a DVD disc in the system and hold Up until the DVD player menu appears. Release Up, and select the play icon.

Alternatively, hold L1 + Select + Circle buttons while the PlayStation2 console is turned on. Insert the DVD disc and play.