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, pilot suit, bodysuit, uniform, horns, military, military uniform, white hairband, necktie, red bodysuit, oni horns, hairband, blue eyes, bangs, hetero, red horns, green eyes, window