akira hamaguchi, darling in the franxx, effects, liquid, 1girl, hiro (darling in the franxx), 1boy, zero two (darling in the franxx), pink hair, long hair, horns, black hair, topless male, cloud, sky, closed eyes, day, swimsuit, ponytail, water, blue sky, smile, hetero, red horns, oni horns, partially submerged, hairband, anime coloring, outdoors, couple, alternate hairstyle, cloudy sky, bikini, male swimwear