Hover over the top of the screen until a menu appears, click on the rightmost option, and then on the only option available.



Then click on the dropdown menu and choose the language you want to play in.



Restart the game, and now it'll be in your language of choice.

That's all! I hope you find it helpful. Feel free to post any questions you have if something is not clear, and to follow my Steam Curator page if you're looking for more lewd games to play =D