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