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

Please read the description.

outfit1
aamurasa, long hair, twintails, school uniform, white sailor collar, red neckerchief, sailor shirt, black shirt, short sleeves, black skirt, pleated skirt


outfit2
aamurasa, long hair, twintails, medium breasts, cleavage, sailor bikini, black bikini, bikini skirt, white skirt


outfit3
aamurasa, long hair, twintails, school uniform, white sailor collar, red neckerchief, yellow cardigan, long sleeves, black skirt, pleated skirt


outfit4 (改二)
bbmurasa, long hair, two side up, hair flaps, hairclip, hat, black headwear, heterochromia, red eyes, brown eyes, white sailor collar, red neckerchief, black shirt, detached sleeves, white belt, black skirt, garter straps


outfit5 (改二)
bbmurasa, long hair, two side up, hair flaps, hairclip, heterochromia, red eyes, brown eyes, medium breasts, cleavage, sailor bikini, black bikini, bikini skirt, white skirt

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