Initial improvements to the English localization were a priority in these early builds to clarify dialogue and item descriptions.
Key characteristics and fixes associated with this and adjacent early versions (v1.0.2 to v1.0.3) include: Download ASTLIBRA Revision v1.0.2.2
Improved frame rate stability in certain high-density particle areas. Initial improvements to the English localization were a
ASTLIBRA ～生きた証～ Revision Update V1.0.6 - Patch Notes Download ASTLIBRA Revision v1.0.2.2
If you are looking for a "PROPER" download tag often seen on Skidrow & Reloaded or similar sites, it typically indicates a re-release of a previous download that fixes a technical flaw in the original scene upload, such as a missing file or a broken crack.