This is Yagami MIsako from Gibo: Stepmother's Sin. The game is quite old so the art style is a bit dated.

Her prompts:

gssyami, purple hair, blue eyes, bow, long hair

She has a few hairstyles so you might want to play around with long hair, single hair bun and single hair braid.

V1 notes:

Seems like the model is overfitted,

Recommended strength 0.4-0.5, anything more you will start seeing signs of saturation.