Osu Ainu Client Direct

Be careful what (private) server clients you're using : r/osugame

or the Ainu-specific launcher to toggle between the official Bancho servers and Ainu. Logging In osu ainu client

The Ainu Client offers several technical "addons" that differentiate it from the standard osu! stable client: Be careful what (private) server clients you're using

This is the most critical point. The creators of clients like Ainu were often anonymous developers from Russian or Brazilian forums. These .exe files require you to disable your antivirus. Many "osu ainu client download" links on YouTube or MediaFire contain: osu ainu client