akira hamaguchi, darling in the franxx, effects, liquid, 1girl, 1boy, pink hair, zero two (darling in the franxx), hiro (darling in the franxx), black hair, long hair, horns, closed eyes, topless male, ponytail, sky, cloud, hetero, couple, red horns, day, oni horns, alternate hairstyle, sweatdrop, blue sky, swimsuit, open mouth, hand on another's shoulder, looking at another, high ponytail