surtr \(arknights\), arknights, 1girl, demon horns, demon girl, horns, purple eyes, hair between eyes, red hair, very long hair, long hair, hair intakes, solo, upper body, looking at viewer, dutch angle, sitting, straight-on, outdoors, city, closed mouth, long sleeves, black horns, black dress, open clothes, building, demon wings, jacket, collarbone, bare shoulders, off shoulder, black jacket, detached wings, skyline, sunset, expressionless, chest strap, wings, sunlight, dress, masterpiece, absurdres, aesthetic, flat color,
