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

kitazawahagumi, 1girl, solo, short hair, smile, looking at viewer, dress, orange hair, jacket, hood, brown eyes, open clothes, white dress, floral print, collarbone, blush, open jacket, orange eyes, cslsk

School uniform Hagumi:

kitazawahagumi, 1girl, solo, orange hair, school uniform, smile, short hair, double-breasted, looking at viewer, buttons, red ribbon, ribbon, long sleeves, sailor dress, dress, white sailor collar, sailor collar, ahoge, brown dress, neck ribbon, hanasakigawa school uniform, pleated dress