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