akira hamaguchi, darling in the franxx, effects, liquid, 1girl, hiro (darling in the franxx), 1boy, pink hair, zero two (darling in the franxx), long hair, black hair, cloud, sky, horns, one-piece swimsuit, white hairband, day, swimsuit, hairband, blue sky, topless male, sweatdrop, green eyes, oni horns, cloudy sky, outdoors, looking at another