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

Please read the description.

outfit1
aatoto, long hair, low twintails, hair ribbon, black ribbon, earrings, brooch, bare shoulders, frills, white shirt, detached sleeves, suspenders, black skirt


outfit2
aatoto, short twintails, braid, beret, white headwear, hat bow, choker, sailor collar, blue dress, short sleeves, wrist cuffs

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