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

yukina, 1girl, butterfly hair ornament, solo, long hair, hair ornament, looking at viewer, skirt, shirt, grey hair, black skirt, white shirt, bangs, frills, long sleeves, casual

School uniform Yukina:

yukina, 1girl, solo, skirt, long hair, school uniform, necktie, jacket, yellow eyes, grey jacket, plaid, striped necktie, plaid skirt, long sleeves, bangs, yotsuba school uniform