crystal maiden (series), artist request, game cg, highres, official art, variant set, 1girl, black shoes, blue eyes, blue hair, breasts, engine, fingerless gloves, forehead, full body, gloves, hand on own hip, holding, holding weapon, katherine (crystal maidens), navel, navel piercing, nipples, nude, over shoulder, piercing, pussy, shoes, solo, star (symbol), star print, transparent background, water, weapon, weapon over shoulder, wire