(monochrome),greyscale,flat color,1girl,solo,surtr_\(arknights\),horns,purple eyes,glowing eyes,black hair,long hair,bangs,hair between eyes,demon horns,shirt,black shirt,choker,black choker,official alternate costume,necklace,off shoulder,short sleeves,jacket,cross necklace,jewelry,black jacket,looking at viewer,upper body,expressionless,close-up,pov,from below,masterpiece,bestquality,onnk,Q