weight 0.9 is best. (Base model is Noob-Illustrious SDXL)
I created this LoRA as requested.
outfit1
aaamane, long hair, red hair, hair rings, hair bow, blue eyes, breasts, school uniform, plaid bowtie, white shirt, black dress, blue dress, short sleeves
outfit1 (style)
grisaia (series), aaamane, long hair, red hair, hair rings, hair bow, blue eyes, breasts, school uniform, plaid bowtie, white shirt, black dress, blue dress, short sleeves
outfit2
aaamane, long hair, red hair, hair rings, hair bow, blue eyes, breasts, bare shoulders, cleavage, white camisole, cross-laced clothes, white belt, midriff, jeans, black pants
outfit2 (style)
grisaia (series), aaamane, long hair, red hair, hair rings, hair bow, blue eyes, breasts, bare shoulders, cleavage, white camisole, cross-laced clothes, white belt, midriff, jeans, black pants
I uploaded a sample image of the outfit as a post.
In the sample images, used hires.fix and the extension Adetailer.