The patch is currently on version 0.9.2, and these are the changes it will make:

Reverted costumes back to Bikinis, also changing the menu icons back and their original names and descriptions. Completely redid Chapter 2 and a few other small files to return references to Gravure Modelling, this also uses the original voice files. Fixed any map changes relating to pictures in dungeons that were changed. Swapped the English files out for Japanese versions for retranslated files. Healing points no longer come in envelopes. Changed Profiles to reflect the character’s real ages and change back references to Gravure Modeling. Reverted any censored pre-rendered cutscene files.

While North American and European users can use this patch, players will need to know what they are doing to make it work. Thankfully, the creators of the patch can offer aid on Discord. GameSkinny also does not support piracy, and recommends players purchase the game first. You can see an example comparison with the English localization and the patch below: