horn/wood, infection monitor (arknights), surtr (arknights), arknights, highres, 1girl, bare shoulders, black dress, black horns, blush, breasts, chest strap, cleavage, closed mouth, demon girl, demon horns, dress, hair between eyes, hair intakes, holding, holding sword, holding weapon, horns, jacket, large breasts, long hair, looking at viewer, purple eyes, red hair, simple background, solo, standing, sword, upper body, very long hair, weapon, white background