Satou Masuki from BanG Dream.
It is 100 official pictures and autotags.
Example prompt for casual MASKING:

satoumasuki, 1girl, solo, blonde hair, skirt, short hair, jacket, navel, yellow eyes, midriff, looking at viewer, red jacket, black skirt, long skirt, open clothes, open jacket, shirt, black shirt, cslsk

Onstage MASKING:

satoumasuki, 1girl, solo, blonde hair, short hair, gloves, fingerless gloves, black gloves, looking at viewer, short sleeves, open clothes, criss-cross halter, jacket, black jacket, yellow eyes, open jacket, midriff, navel, choker, wide pants, white top, jewelry, onstgsk