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