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