Do you have any other questions about Fire Emblem Warriors or its updates?
NSP stands for " Nintendo Submission Package" or " Nintendo Switch Package". It's a file format used to distribute and install games on the Nintendo Switch console. Fire Emblem Warriors Switch ROM NSP UPDATE DLC
Here's what I found:
You're looking for information on a specific game piece related to Fire Emblem Warriors on the Nintendo Switch! Do you have any other questions about Fire