Seta Kaoru from BanG Dream.
It is 100 official pictures and autotags.
Example prompt for casual Kaoru:

setakaoru, 1girl, solo, purple hair, shirt, pants, jewelry, white shirt, black vest, smile, long sleeves, striped, necklace, looking at viewer, ponytail, vest, open mouth, collared shirt, black pants, long hair, bangs, sidelocks, red eyes, cslsk

School uniform Kaoru:

setakaoru, 1girl, solo, skirt, necktie, purple hair, jacket, grey jacket, school uniform, plaid, plaid skirt, striped necktie, pleated skirt, blazer, looking at viewer, shirt, long sleeves, red eyes, blue skirt, striped, collared shirt, ponytail, haneoka school uniform