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. The link to download this is provided directly from the publisher of the game. Regardless, take extra caution as the patch has not been verified, and even less responsibility than usual is taken if there is any issue with this patcher!
Download and run the patch installer executable, as per the Kagura Games website instructions.
Patch download: https://www.kaguragames.com/product/seed-of-evil-steam-patch/
Steam store: https://store.steampowered.com/app/892760