About the koizumi itsuki tag
koizumi itsuki is a character tag that NovelAI Diffusion can use. On Danbooru it has 1,861 posts, and its best-rated still image scores 366. 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
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 in a prompt
Put the subject first, then this tag, then quality tags.
koizumi itsuki, solo, best quality, masterpiecewlop, koizumi itsuki, 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
Character from Suzumiya Haruhi no Yuuutsu. A lighthearted esper who works with an organization of peers. His powers pertain to dealing with 'closed spaces' that appear due to Suzumiya Haruhi's negative emotions. He is a popular target for yaoi fans, due to his fabulousness, carefree smiling demeanor, and questionable actions towards Kyon (particularly in the anime). In the novels he reveals he has feelings for Haruhi, though fans often paired him with Nagato Yuki instead.
See also
FAQ
Does NovelAI recognize koizumi itsuki?
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.
How do I write koizumi itsuki in a prompt?
Write "koizumi itsuki" 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.