weight 0.7 is best.
I created this LoRA as requested.

Please read the description.

outfit1
aamiyu, twintails, hair ribbon, x hair ornament, brown eyes, small breasts, magical girl, white cape, purple leotard, detached sleeves, purple sleeves, showgirl skirt, thigh strap, purple thighhighs

outfit2
bbmiyu, twintails, hair ribbon, animal ears, hairclip, small breasts, cat tail, bare shoulders, detached collar, neck ribbon, bell, grey vest, sleeveless, animal hands, paw gloves, black panties, garter straps, grey thighhighs

outfit3
ccmiyu, short hair, beret, white headwear, hair ornament, small breasts, collarbone, neck ribbon, red ribbon, white sailor collar, white shirt, puffy sleeves, short sleeves, school uniform, pleated skirt, black skirt

I uploaded a sample image of the outfit as a post.