: If this file is associated with a specific platform (like FC2), make sure you're using it according to their terms of service to avoid account suspension or legal issues.

Engage with the content fully. For video content, this means watching it in its entirety or a significant portion that allows you to form an opinion.

This feature could be implemented as a desktop application using programming languages like C# or Python, utilizing libraries such as rarfile for Python or SharpZipLib and SevenZipSharp for C# to handle .rar file operations.