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