It is possible that "Forbidden Passion" refers to a privately developed, indie visual novel, or a specific NSFW/adult gaming project often found on platforms like Itch.io, F95zone, or Patreon, which may not be indexed by standard search engines. To provide a detailed report on version [v0.8.5], I would If you can provide: this is (e.g., game, story)? Where you found it (e.g., specific website or platform)? I can look for the correct, specific information.

Based on the available search results, there is no direct information regarding a software, game, or document titled "Forbidden Passion [v0.8.5]". The search results indicate a mix of fiction reviews, software QA services, and administrative documents from 1986.