Chiral Night Rhythm Carnival unpacking ?

[yaoui]

i want to unpack the npk files from the chiral night rhythm carnival but I dont have the key.
mwarestuff is a tool that can extract those files but it doesnt seem to include rhythm carnival with it so i was wondering if there is a way to find the key for the game, or if someone already has it and is willing to share.

edit: found the key and am able to unpack now, had a stupid moment