The Big ImageBoard (TBIB) - 1girl arknights arms behind back bdsm black dress black footwear black pantyhose blush bound bound arms breasts brown eyes brown hair brown headwear closed mouth dress full body high heels highres large breasts leg up long hair looking at viewer official alternate costume pantyhose qianshibu roberta (arknights) roberta (granter of colors) (arknights) shibari shibari over clothes shoes single shoe solo strapless strapless dress suspension tail two-tone background white background yellow background