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