Can i buy it in the german steam store? I cant find it. And i dont want to risk my account by using VPN.
Viewing post in AURA: Hentai Cards | October 20 - Steam Release comments
You wouldn't be able to play it on your german acc with vpn either. It depends on what country the account belongs to. Even family sharing with an account that does have access to games like this doesn't work.
However I doubt steam would care if you happen to have a foreign account that you occasionally switch to.