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