It can be found as DLC for the game on the Steam Store: EVIL STAR Uncensored
If the Steam Store page isn't working, you may be able to install it by either clicking the following command or running it directly on your PC: steam://run/996330
Note that this will immediately run the game and start downloading the DLC if possible - you may need to close the game and wait until the DLC finishes downloading for the patch to work.
Steam store: https://store.steampowered.com/app/701540
Want to keep up to date with the latest uncensored games and patches? Subscribe to the UncensorPat.ch mailing list.
You'll receive fortnightly emails with the latest uncensored games and uncensor patches. Your email will only be used for sending you UncensorPat.ch-related information, and you can opt-out anytime either via the link in the emails or via the Unsubscribe page.