This model is Okuyama Sumire (奥山すみれ) from Idoly pride.
Notes
This model is trained by the screenshot of official application, so its painting style is nearly 3d paint.
If you want to generate the picture of side face, this model might not work well.
I recommend this model's weight is between 0.4 to 0.7. In case of over 0.8, your prompt might not work well.
How to Use
The trigger words of character's face is okuyama sumire.
If you want to wear school uniform, add sumire uniform.
If you want to wear idol uniform, add trinity aile. Especially, her boots is often disappeared. When you want to the picture include underbody, I recommend add white thigh boots.
If you want to wear swim wear, add sumire swim. Swimwear ornament (ex. thigh strap, extended cloth parts of layered skirt etc.) is frequently disappered.