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