akira hamaguchi, darling in the franxx, effects, liquid, 1girl, 1boy, hiro (darling in the franxx), pink hair, zero two (darling in the franxx), black hair, sky, long hair, cloud, one-piece swimsuit, white hairband, swimsuit, horns, hairband, day, topless male, blue sky, green eyes, anime coloring, cloudy sky, blue eyes, oni horns, looking at another, outdoors, white one-piece swimsuit, sweatdrop, breasts