Sakurada Miyu from D4DJ.
It is 100 official pictures and autotags.
Example prompt for stage outfit Miyu:

miyu, 1girl, solo, pink hair, skirt, hair ornament, long sleeves, puffy sleeves, shirt, smile, looking at viewer, white shirt, green skirt, open mouth, bangs, stage outfit, stage,

School uniform Miyu:

miyu, 1girl, pink hair, solo, school uniform, smile, long sleeves, hair ornament, hairclip, looking at viewer, pink eyes, short hair, lillilly school uniform

Casual Miyu:

miyu, 1girl, solo, pink hair, shirt, skirt, white shirt, hair ornament, blush, bangs, pink eyes, black skirt, hairclip, looking at viewer, collarbone, shoulders cut, casual outfit