This is Bronya Rand from Honkai: Star Rail.

(Full CN name: 布洛妮娅•兰德)

(JP: ブローニャ・ランド (崩壊：スターレイル))

Her base prompt:

hsr-br0ny4, grey hair, long hair, grey eyes, drill hair, hair between eyes,

Her outfit:

elbow gloves, thigh boots, earrings, jewelry, black footwear, white dress, bare shoulders, brown gloves, pantyhose, thighhighs, breasts, black gloves, detached sleeves, crossed bangs, sleeveless,

Her weapon:

holding weapon, holding gun,