The World Ends with You: Solo Remix Cheats

To mingle, you need someone with either a DS with TWEWY, or a DS doing some sort of wireless activity (not sure on wi-fi). If you have no one that has the game, but have another DS. Turn on Mingle, and make the other DS do pictochat. You should run into a civvies. Rinse, lather, and repeat! Try to get those pins that can evolve with mingle PP!