background animation, darling in the franxx, hair, kazutaka sugiyama, hiro (darling in the franxx), 1girl, zero two (darling in the franxx), pink hair, 1boy, long hair, pilot suit, bodysuit, black hair, horns, oni horns, hairband, red horns, red bodysuit, uniform, white hairband, hetero, holding hands, bangs, window, military, couple, military uniform, closed eyes, looking at another