background animation, darling in the franxx, hair, kazutaka sugiyama, zero two (darling in the franxx), hiro (darling in the franxx), 1boy, pink hair, long hair, red bodysuit, 1girl, white hairband, black hair, bodysuit, horns, pilot suit, sitting, oni horns, uniform, red horns, parody, hairband, military uniform, military, bangs, window, hetero