Model not mine, all credit goes to XPHG:

A LoRA weight of 0.9 works great, though you can adjust the strength as you prefer.

Prompts I usually used:

aira-shiratori, short hair, pink hair, hair between eyes, bangs, ahoge, pink eyes, white collared shirt, red bowtie, blue jacket, school uniform jacket, school uniform, purple skirt, pleated skirt, white socks, knee-high socks, brown shoes, schooloutfit,

aira-shiratori, short hair, pink hair, hair between eyes, bangs, ahoge, pink eyes, black collar, white shirt, undershirt, purple sweater, long sleeves, loose sweater, sweater off shoulders, black thighhighs, secondoutfit,