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