akira hamaguchi, darling in the franxx, effects, liquid, 1girl, hiro (darling in the franxx), 1boy, zero two (darling in the franxx), pink hair, black hair, long hair, topless male, cloud, horns, sky, partially submerged, water, day, ponytail, outdoors, one-piece swimsuit, tree, red horns, blue sky, oni horns, swimsuit, white hairband, cloudy sky, anime coloring