The World Ends with You: Solo Remix Tips

Drop Rates
Pins are dropped by Noise after they are defeated sometimes. To increase the chances of getting a certain pin, then you can do one of two things:

-Decrease your level. This adds 1 to the drop rate for every level dropped
-Chain battles, this multiplies your current multiplier by the number of battles chained (4 battles chained, 1 normal drop rate = 4 drop rate)