How can I recompile txt files to .pak?

Mar 20, 2020
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Hello!

I've extracted all the files from a game called "Dorei Himekishi to Dorei Jijo to no Slow Life" from a .pak file.
Using nekoKF I was able to manipulate them and for testing purposes, I translated a few lines and then saved them back to the original file.
My question would be, how can I recompile these files to the original .pak file? I tried zipping it with 7zip and renaming that to .pak but the game wouldn't start with this method.
Any help would be highly appreciated!