darling in the franxx, effects, naoya takahashi, smears, smoke, hiro (darling in the franxx), zero two (darling in the franxx), 1girl, 1boy, pink hair, long hair, black hair, uniform, bodysuit, pilot suit, horns, military, red bodysuit, military uniform, sitting, blue eyes, necktie, hairband, white hairband, oni horns, red horns, window, bangs, hetero