Mr. Lemming said:
There was a game save on one of the recent Playstation magazine demo disks that basically did the alterego unlock code so I'm not as pissed now

That said, I would love to get the JP version (I heard the animations were better, and the sound not as flaky)
It's not a huge difference, but the overall package is better than the U.S. release. You get Japanese and English voice options (the Japanese voices sound much better; I'm not even talking about the story stuff but during matches),improved animations, a few more submission moves, all the characters in exhibition, one extra character (Mistress' valet, Sabastian, the only male character in the game), an art gallery, training videos, five movies to unlock including music videos, and for the pervs, you can move the camera around and zoom in/out during submissions. Game play feels just a bit tighter to me, too. The A.I. can still be just as stupid and just sit there for a second when you get grabbed every once in a while.
They also renamed the humilation moves to "H-Moves," which seems more fitting. :lol
but its not worth the hassle of modding my PS2 for one game.
It's worth getting your PS2 modded for all the great import titles out there that never made it Stateside, or the games that had better Japanese releases.
Stuff like The Rumblefish Super Galdelic Hour, Initial D, Naruto Narutimett Hero 2, Jojo's, Ape Escape 3, Intelligent Cube Final, Ka 2 (Mr. Mosquito 2) Vampire Collection, Futari De Fantavision, and all the SNK titles that will never see release on PS2 over here (KOF '94 Rebout, KOF Neowave, Garou MOTW, Samurai Shodown V, SvC Chaos, Twinkle Star Sprites La Petite Princess, Last Blade 1&2, etc.) and much more. Japan gets tons of new games of all different genres all the time that will never see the light of day over here.