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