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