Hatsune Miku: Project Diva 2nd Cheats for PSP
Complete Kyodai Shoujo under the Hard or higher difficulty setting to unlock the ethnic costume for Akita Neru for purchase at the shop for 20,000 Diva points.
When you have a save file from the first Project Diva you can import it when you start a new game to get a 5,000 point bonus, a Miku pop poster room item, and ALL the costumes including swimsuits that you had unlocked in Project Diva.