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