AKB1/48: Idol to Koishitara… is a Rhythm / Music game, developed and published by Bandai Namco Games, which was released in Japan in 2010.
I am not really into anime psp games but i think this one is good. My friend played it and told me it was really nice. Any ways below are the download links for the game.
Download AKB1/48: Idol to Koishitara… JP PSP ISO Now !
Download from Hitfile