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