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