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