Hanazono Tae from BanG Dream.
It is 100 official pictures and autotags.
Example prompt for casual Otae:

tae, 1girl, solo, long hair, green eyes, black hair, looking at viewer, smile, blush, blue shirt, shirt, pants, short sleeves, collarbone, white pants, bangs, black hair, hair between eyes, casual

School uniform Otae:

tae, 1girl, hanasakigawa school uniform, solo, long hair, school uniform, green eyes, looking at viewer, black hair, smile, brown dress, dress, blush, bangs, buttons, double-breasted, ribbon, long sleeves, neck ribbon, red ribbon, sailor dress, red bow

Onstage Otae:

tae, 1girl, solo, long hair, green eyes, necktie, smile, thighhighs, jewelry, earrings, shorts, looking at viewer, suspenders, black shorts, star (symbol), black hair, blue necktie, star print, blush, star earrings, shirt, black thighhighs, bare shoulders, onstagesk