When you see a file name ending in .part5.rar , it indicates a :

Milfy City is a popular "dating simulator" or visual novel developed by IC Games. The story follows a young student in a new city as he interacts with various characters, primarily older women, in an effort to build relationships and progress through different romantic and narrative paths. The game is known for its high-quality 3D renders and detailed character designs. Understanding the .part5.rar File

The file is one segment of a multi-part compressed archive for an adult-themed visual novel game called Milfy City . What is Milfy City?

You cannot open part 5 individually. You must place all parts in the same folder and use a program like 7-Zip or WinRAR to "Extract" the first file ( part1.rar ). The software will automatically pull data from all subsequent parts to recreate the full game folder. Version 0.71b Highlights

The primary way to support the developer and get official, safe builds is through the IC Games Patreon.

Always ensure your antivirus is active when downloading files from third-party file hosts, as split RAR files are common targets for "adware" wrappers.