The good news: you can unlock the Elite Beat Agents in Osu! Tatakae! Ouendan 2. The bad news: you have to live in Japan, and take your copy of the game down to your localDS Station download center.
The promotion runs from June 28 through July 11, so get down there (or schedule a trip to Japan) quickly! You'll unlock both the Agents and the adorable Neko for both Versus and single-player modes.
Unlock EBA in Ouendan 2 [Nintendo]
