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About the koizumi itsuki (female) tag
koizumi itsuki (female) is a character tag that NovelAI Diffusion can use. On Danbooru it has 562 posts, and its best-rated still image scores 141. 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 koizumi itsuki (female)
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 koizumi itsuki (female) in a prompt
Put the subject first, then this tag, then quality tags.
koizumi itsuki (female), solo, best quality, masterpiecewlop, koizumi itsuki (female), 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
A fan-created widely-known female version of Koizumi Itsuki. She is as beautiful as he is handsome and she typically wears pantyhose under her school uniform's skirt. She retains most of his powers and qualities.
While the genderswapped version's name has the same pronunciation as the normal male version, the kanjis that spell out each name are different (一姫 for the female as opposed to the original 一樹, as 一姫 is a feminine name in Japanese and 一樹 is a masculine one).
FAQ
Does NovelAI recognize koizumi itsuki (female)?
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 koizumi itsuki (female).
How do I write koizumi itsuki (female) in a prompt?
Write "koizumi itsuki (female)" 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.