Because it is a .part3.rar file, it is incomplete on its own. You generally need all other parts (Part 1, Part 2, etc.) in the same folder to extract the full game successfully.

Files from this source often require a password to extract (usually the website URL itself).

Based on the naming convention and the "QYIR6JUO" identifier, here is what this file represents:

Ensure you have parts 1, 2, and any others downloaded.

Right-click Part 1 and use a tool like WinRAR or 7-Zip to "Extract Here." It will automatically pull data from Part 3 to complete the process.

The prefix indicates it was downloaded from otomi-games.com , a site known for hosting visual novels, dating sims, and otome games (games marketed toward women that focus on romance and plot).