i extracted the files from your sample with this scripthttp://aluigi.altervista.org/bms_search ... c=Nekopara
but all the ones i looked at didn't make sense, most didn't have aligned data
which could indicate a bad extraction or maybe another layer of compression
or a different compression was used.
I did the same thing and got all the .dat files. I used all the ways I could find to try and open the .dat files but nothing worked. I am stuck and wasn't sure where to go to find solutions so I stumbled upon this site. Hoping someone in the community may know a way about it. Thank you!