029, alciel (hataraku maou-sama!), satan jacob, hataraku maou-sama!, highres, novel illustration, official art, third-party source, 3boys, abs, arms up, bird boy, bodysuit, cloak, closed mouth, demon horns, energy ball, feathered wings, fingernails, greyscale, horns, kamio (hataraku maou-sama!), mask, monochrome, multiple boys, muscular, muscular male, open mouth, outstretched arm, pectorals, pointing, short hair, sleeveless, smile, standing, teeth, topless male, upper teeth only, v-shaped eyebrows, wings