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