About the koakuma tag
koakuma is a character tag that NovelAI Diffusion can use. On Danbooru it has 14,699 posts, and its best-rated still image scores 685. The samples above put the tag at the front of a fixed base prompt with seed 1234, so the differences between tags come from the tag alone.
How each model draws koakuma
Follows composition and expression instructions closely, so the effect shows in a tidy form.
Reacts to the tag more strongly, so its effect is easier to see.
WAI illustrious SDXL v17, a local model. Shows how the same tag reads outside NovelAI.
Writing koakuma in a prompt
Put the subject first, then this tag, then quality tags.
koakuma, solo, best quality, masterpiecewlop, koakuma, soloThe negative prompt and the full settings are on the terms page.
How these samples were made
Every image uses 832×1216, seed 1234, 23 steps and the k_euler_ancestral sampler. The base prompt and negative prompt stay the same for every tag, and only the tag under test changes. Images flagged by the NSFW check are regenerated with a new seed or hidden.
From the Danbooru wiki
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Stage 4 midboss of Touhou's Embodiment of Scarlet Devil who lives in the Scarlet Devil Mansion, often seen in the Voile Library. Her name literally translates to "Little Demon", leading to some ambiguity whether or not it is her real name.
It is generally assumed by the majority of fans that Koakuma is Patchouli's summoned familiar and personal assistant, as she is rarely seen outside of the library unless accompanying the magician, and served as Patchouli's midboss in EoSD. She's also frequently depicted as a succubus in fanworks, despite ZUN calling her more of an imp and her exact species being unknown. Unused sprites in the EoSD game files include a possible "EX-Koakuma" with violet hair and a purple arcane aura, which might have been meant to appear alongside Patchouli during the Extra Stage midboss fight.
In Whispered Oracle of Hakurei Shrine, her ability has been revealed as "capable of finding target book in an instant", which can be interpreted as she listens to the books' "whispers/sounds" and triangulates their location like some kind of bat sonar. In the same work, It is also states that she is like a magical creature similar to Patchouli and the various fairies, which is in line with ZUN's definition of Devil, where he describes them as 'large species that can include vampires and magicians among other similar things'.
She has red eyes, long red hair, black demon wings on her head and back, and occasionally has a demon tail too. Her outfit is a collared white shirt with long sleeves, a red necktie, a matching black vest and skirt, either white socks or black pantyhose, and black mary janes. Some artists interpret her sprite to be wearing a black capelet and black dress instead.
Appearance
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External links
FAQ
Does NovelAI recognize koakuma?
Compare the samples on this page. Every tag on this site shares the same seed and base prompt, so any change you see comes from koakuma.
How do I write koakuma in a prompt?
Write "koakuma" near the front of the prompt and separate it from other tags with commas.
Should I use V5 or V4.5?
V4.5 shows the tag's effect more strongly. V5 gives steadier images with fewer artifacts.