It looks like a PSP port of Guilty Gear XX Accent Core Plus is being prepared as we speak!

Accent Core was ported over to the Playstation 2 system last year from it's Arcade versions, while Accent Core Plus was ported to Japan's Playstation 2's last month, showing an addition of a couple new characters, along with new story modes and other gameplay modes.

A new Mode that will be present in the PSP port of this game will be called "Team Battle" and it is a Multiplayer and Single Player Mode that allows players to form a team of three people to fight in a tournament.

http://www.psphyper.com/psp/psp-to-get-accent-core-plus-too