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), long hair, cloud, swimsuit, horns, sky, topless male, bikini, water, day, ponytail, partially submerged, outdoors, oni horns, white bikini, blue sky, tree, red horns, rock, cloudy sky, anime coloring