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