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, black hair, bodysuit, pilot suit, green eyes, red bodysuit, horns, anime coloring, blood, uniform, hetero, looking at another, oni horns, military uniform, bangs, military, open mouth, blood on face, couple