coco (artist), koakuma, embodiment of scarlet devil, touhou, 1girl, alternate costume, ascot, bat wings, black thighhighs, book, cross, demon tail, female focus, frills, garter straps, hat, head tilt, head wings, holding, holding book, inverted cross, lace, long hair, long sleeves, looking at viewer, mini hat, mini top hat, red eyes, red hair, shirt, simple background, skirt, solo, tail, thighhighs, top hat, v arms, white background, white shirt, wings, zettai ryouiki