weight 0.9 is best.

This model is based on the SDXL Pony Model.
It doesn't work well with Animagine XL Checkpoint.

I created this LoRA as requested.

outfit1
aasena, long hair, blonde hair, hair ornament, aqua eyes, breasts, school uniform, black necktie, blazer, green jacket, long sleeves, plaid skirt, green skirt

outfit2
aasena, long hair, blonde hair, hair ornament, aqua eyes, breasts, school uniform, black necktie, collared shirt, white shirt, short sleeves, shirt tucked in, plaid skirt, green skirt

outfit3
aasena, long hair, blonde hair, hair ornament, aqua eyes, breasts, school uniform, black necktie, grey cardigan, long sleeves, plaid skirt, green skirt

outfit4
aasena, long hair, blonde hair, hair ornament, aqua eyes, breasts, cleavage, string bikini, blue bikini, front-tie top, side-tie bikini bottom

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

In the sample images, used hires.fix and the extension Adetailer.