Check the "DLC" section on the Steam store page or the "Recent News" / "Community Hub" tabs for the game. Developers often post external links or instructions there because Steam’s policies on adult content can be strict.
The game is officially available on . You can find the store page by searching for "Together BNB" directly in the Steam client or via a browser. Official Platform: Together BNB on Steam Developer: AURORA Studio The "Adult Content" Patch together-bnb-game-link
You’ll need to earn money by completing tasks or hunting to buy gifts and outfits for the girls. Check the "DLC" section on the Steam store