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, black hair, horns, swimsuit, topless male, sky, hetero, water, cloud, ponytail, day, couple, looking at another, oni horns, partially submerged, hairband, one-piece swimsuit, anime coloring, red horns, blue sky, hand on another's face, white hairband, outdoors, face-to-face, bikini