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