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