The Big ImageBoard (TBIB) - 1boy 1girl arknights back-to-back black background black jacket black tank top blue scarf breasts cleavage coat commentary demon boy demon girl demon horns gradient gradient background hammer highres holding holding hammer holding pen horns infection monitor (arknights) jacket large breasts letterboxed light purple hair logos (arknights) long hair looking at viewer mao (expuella) mudrock (arknights) nib pen (object) off shoulder open clothes open coat oripathy lesion (arknights) pen pointy ears red eyes scarf serious short hair simple background tank top white coat white hair