These are 3D model files. You will likely need software like Blender , MikuMikuDance (MMD) , or Unity to view them.
Use The Unarchiver or Keka , as macOS does not natively support .rar extraction. 3. Understanding the Contents
This file appears to be a specialized archive, likely related to (often associated with specific digital art communities or indie projects).
Never run .exe or .bat files found inside unknown .rar archives unless they are from a verified developer, as these are the primary ways viruses are spread via compressed files.