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