Another angle: sometimes users mention stories they want to read, but the title might be incorrect. Could the user be referring to a different title? For example, "Ahriman's Gift" might be part of a series or a lesser-known work. Alternatively, maybe the user is referring to a story by the author Kohan, and "Ahriman's Gift" is the title.

Since it's a free download, maybe it's available on a specific platform or website. But given the way the user has structured the query, they might be looking for where to find it legally. However, I should also consider that some content might not be available due to regional restrictions or copyright laws. Additionally, ensuring that the source is ethical and legal is important.

Moreover, if it's a story related to Zoroastrian mythology, there might be resources in academic works or literary archives. I should also consider the possibility that the user is referring to a different language or a transliteration issue. For example, "Kohan" might be a misspelling of "Khoja" or another term.

If you clarify the title's origin or provide more context (e.g., author, language, genre), I can refine these suggestions!