3ds the seven deadly sins unjust sin (.dat and .pck)

[simonrule]

hello guys i want to translate this awesome game it's the seven deadly sins unjust sin for the 3ds console i have a bunch of dat and pck files the problem is i don't know how to extract them or edit this files i think the game text is in .dat files here are screenshots of hxd of the files i tried quickbms but i don't have .dat script for the program
.dat file



.pck file


and here are the 2 of the files maybe can help you figure out what tools should i use to extract them