You've gotta love a game with a subtitle like that, don't you?
The title of said game is Prinny 2, by the way--with Prinny 2: Dawn of the Great Pantsu War being the sequel to Nippon Ichi's Disgaea-themed PSP platformer, Prinny: Can I Really Be the Hero?
Oh, and in case you aren't as big a nerd as I am: "Pantsu" basically is the Japanese word for "panties" or "underwear."
The subtitle makes a lot of sense considering the game calls on the titular Prinny to recover another Disgaea character's stolen underswear.
If that sounds interesting (and, really, how could it not?), you may want to check out the trailer for the soon-to-be-released (March 25) Japanese version of the game:
As far as I'm aware, NIS America hasn't announced an American or European release date for the title, but I'm guessing (hoping) they'll do just that sooner or later.