Verifying patches means owning the games, which while I would love to own every lewd Steam game, is not practical for me at the moment.
If you have an interest in helping me out with game access, get in touch through the contact page!
The patch install involves running a .exe. This was retrieved from the developer, and the link I'm providing is the same as the developer does on the JAST USA website. Regardless, take extra caution as I have not verified this, and I accept even less responsibility than usual if there is any issue with this patcher!
Steam store: https://store.steampowered.com/app/800180