background animation, darling in the franxx, hair, kazutaka sugiyama, zero two (darling in the franxx), 1girl, hiro (darling in the franxx), 1boy, long hair, pink hair, horns, pilot suit, bodysuit, red bodysuit, green eyes, black hair, white hairband, blood, hairband, oni horns, anime coloring, red horns, looking at another, blood on face, bangs, hetero