help extracting a .dat file

[aviancompatriot]

i've been meaning to extract some assets from this .dat file which come from this short doujin game
problem is i've tried multiple tools and none of them worked
dxarc? arc_unpacker? GARbro? neither one of these were able to extract the contents of the file,which i know exist due to the hex code listing some of the files inside
i would very much appreciate any help given for me to figure it out