Since this is a (Japanese) region file, a "full feature" setup requires making your console region-free:
Because Wii U games are large (Injustice is ~8GB+), it is highly recommended to install it to an external USB Hard Drive with a Y-Cable for stable power. IE-GS2013-JPN-ISO-ZIPERTO.rar
If it's a .wud or .wux file, you’ll need the Title Key or Common Key to decrypt it using tools like WiiUDownloader or UWUVCI . Since this is a (Japanese) region file, a
Since you're asking to "come up with a full feature," it sounds like you're looking for a guide on how to actually use this file on a Wii U console. Here is the standard "feature" workflow for getting a backup like this running: 1. File Preparation Before the IE-GS2013-JPN-ISO-ZIPERTO.rar