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