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, cloud, long hair, sky, horns, one-piece swimsuit, white hairband, day, hairband, topless male, swimsuit, blue sky, green eyes, cloudy sky, outdoors, oni horns, blush, blue eyes