1girl, arms up, bangs, black hair, black ribbon, black shirt, blunt bangs, brain, collarbone, dome, drill hair, empty eyes, exposed brain, grey background, hair ribbon, hands on own head, head tilt, light frown, long sleeves, looking at viewer, medium hair, mukinou korone (ninomae), neck ribbon, ninomae (nnme 618), open mouth, original, pale skin, ribbon, shirt, simple background, solo, twin drills, upper body, white eyes, wide-eyed, wide sleeves