[Thinking]
We need to process the user input: "underwater maze above the void, no human". The input is in English. It contains a comma-separated phrase. No specific IP mentioned. The input is not in Danbooru tag format; it's more descriptive. Since it says "no human", we should not include any human or character tags. The input is less than 5 words? Actually it's 6 words: "underwater maze above the void, no human". But it's two clauses. The instruction says: "If user's input is less than 5 words, expand it to around 10-15 danbooru tags properly." 6 words is over 5, so we don't need to expand? But the instruction says "less than 5 words", so 6 is not less. However, we should still convert to danbooru tags and enhance. Also, we need to add quality tags? The instruction says: "You can add some quality tags, such as masterpiece, ultra detailed." But that was for the less than 5 words case. For general case, it's not explicitly required, but we can add if appropriate? The instruction says: "If user's input is less than 5 words, expand it to around 10-15 danbooru tags properly. You can add some quality tags..." So for inputs >=5 words, we don't have to add quality tags, but we can still add tags. The user input is already descriptive. We need to produce danbooru tags. The phrase "underwater maze above the void" is not a standard danbooru tag. We can break it down: underwater, maze, above, void. But danbooru tags are usually single words or phrases. We can use tags like "underwater", "maze", "void", "above". But "above the void" might be better as "floating" or "sky"? Actually, "void" could be "void" tag. There is a danbooru tag "void". Also "underwater" is a tag. "maze" is a tag. "no human" means we should not include any 1girl, 1boy, etc. So we should just use scenery tags. Also, we need to separate with commas. So we can output: underwater, maze, void, no humans, etc. But "no humans" is a danbooru tag? There is "no humans" tag. Yes, danbooru has "no humans". So we can use that. Also, "above" might be represented by "floating" or "sky". But the phrase "above the void" suggests something floating over a void. We can use "floating" tag. Also, "underwater" and "maze" together might be "underwater maze" but that's not a standard tag. We can use "underwater" and "maze" separately. Also, we can add "scenery" tag. Since it's a scene, we can use "scenery". Also, "masterpiece" and "ultra detailed" can be added as quality tags even if not required. The instruction didn't forbid adding them for longer inputs. But it says "You can add some quality tags" specifically for less than 5 words case. To be safe, we can add them since they are common and enhance quality. However, we must ensure we don't add NSFW tags since the input is safe. So final tags: masterpiece, ultra detailed, no humans, underwater, maze, void, floating, scenery. We should also consider "above" might be "high above" but we can just use "floating". Also, "underwater maze" could be "underwater" and "maze" as separate tags. So final output: masterpiece, ultra detailed, no humans, underwater, maze, void, floating, scenery. But we need to use comma separated. Also, we should not modify any artist tags; there are none. So final output is just these tags.
Now, check for prompt weighting: none.
So final output: masterpiece, ultra detailed, no humans, underwater, maze, void, floating, scenery.
But the instruction says: "Combine the translated text (if applicable) with the additional context danbooru tags. And danbooru tags should be concated by whitespace rather than underscore". So we should use spaces instead of underscores. So "no humans" becomes "no humans", "underwater" stays, etc. Also, we should not use underscores. So final: masterpiece, ultra detailed, no humans, underwater, maze, void, floating, scenery.
We can also add "depth of field" or something? Not necessary.
Thus final output as above.
But wait, the user input has "underwater maze above the void" - that could be interpreted as a maze that is underwater and above a void. So we have both underwater and void. That's fine.
So final answer.
[/Thinking]
<final_output>masterpiece, ultra detailed, no humans, underwater, maze, void, floating, scenery
Sep 24, 2026 11:52 AM