: If you are looking for the "piece" that completes this file, it is likely the English translation text/subtitle file . These are often distributed separately by fan translation groups to be used alongside the original Japanese audio files. Common Components in such ZIPs: Audio Files : Typically in .mp3 or .wav format.
If you are searching for a specific missing part of a split archive (e.g., .z01, .z02), you would need to locate the specific numbered segment from the original source where you found the first part. File: Roshutsu_1_RJ142042_translated.zip ...
: A .txt , .pdf , or .html file containing the translated dialogue. : If you are looking for the "piece"