This is Lora from Princess Connect Grace.

プリンセスコネクトのグレイスのLoraです。

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grace,1girl, black hair, armor, long hair, shoulder armor, asymmetrical clothes, solo, black bodysuit, black eyes, black gloves,silver tiara, hair between eyes, black leotard, blue cape, white belt, single thighhigh, single leg pantyhose,silver breastplate