About the koito yuu tag
koito yuu is a character tag that NovelAI Diffusion can use. On Danbooru it has 654 posts, and its best-rated still image scores 242. 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 koito yuu
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 koito yuu in a prompt
Put the subject first, then this tag, then quality tags.
koito yuu, solo, best quality, masterpiecewlop, koito yuu, 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 character from Yagate Kimi ni Naru. She is a first-year high school student and is the younger sister of Koito Rei.
FAQ
Does NovelAI recognize koito yuu?
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 koito yuu.
How do I write koito yuu in a prompt?
Write "koito yuu" 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.