This script allows you to decompress a specific zip file (base on Deflate, BZip2) in RPG Maker VX Ace and other RGSS system.
But the progress message will print out in Korean.
if you don't need to use it, you should compile DLL file directly using Rust in below link.
In the script command, You make that calls a method called "extract(filename)" of Zip module.
Notice that this script is impossible to decode the non-ascii filename.
Open the script editor and insert this script in somewhere between Materials and Main section.
if you do that, it will be downloaded a needed DLL file from my Github automatically.