This specific keyword refers to a niche piece of fan-created content (often categorized as a doujinshi or fan comic) based on the universe. Within the fandom, "-Henka- Hanshoku Biyori" translates roughly to "Change - Breeding Season," and it typically focuses on transformative or biological themes involving iconic characters like the Saiyans or various alien races.
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When paired with "Henka," the implication is clear: The file being a .zip archive suggests it contains multiple assets: possibly a CBR (comic book reader file), scanned images, or even a Flash animation. -Henka- Hanshoku Biyori -Dragon Ball-.zip